Ruiling Atk1942pc

Light Gray

The Armstrong CIRRUS #584 ceiling tiles have a medium texture and excellent acoustic sound absorption and blocking performance. Features a Angled Tegular 15/16 Edge Type.

Jeff. Whitman, MA. Tue Mar 11 2025

Antique Brass

Elevate Your Space with Art3d Premium PVC Ceiling Tiles! Crafted from durable PVC, Art3d ceiling tiles offer a superior alternative to traditional mineral acoustic panels. Ideal for both residential and commercial applications – including bathrooms, kitchens, restaurants, schools, hospitals, and malls – these elegant 3D-designed tiles deliver style and performance. Perfect for remodeling or new construction, they transform ceilings and walls with modern sophistication.

What an upgrade to my basement ceiling! Easy to install and so beautiful! Highly recommend if you want to impress!. Thomas. Mon May 04 2026

White

The advantages of the material are waterproof, washable, class A fire-rated, hygienic, flexible, lightweight, rust-resistant, and rot-resistant. It's the ideal option for both residential and commercial applications in bathrooms, kitchens, restaurants, school classrooms, hospitals, shopping malls, etc.

Absolutely what we were hoping for! Not only did they pop into place perfectly….they look high end! Love how it changed the whole room. Great quality and easy to install.. Susan. US. Wed Apr 29 2026

White

These elegant stylish 3D PVC ceiling tile designs are excellent matter for remodeling or new construction to a ceiling or wall decoration. These wall panels are easily laid into a standard T-bar drop ceiling grid system or glued over any flat substrates. It's made out of lightweight PVC, flexible and will not crack, water-resistant, and corrosion-resistant for exceptional durability, and safe, and fully recyclable. If you are struggling for something splendid to decorate your ceiling or build an accent wall but on a limited budget, the 3D ceiling panels are the best choice.

I was concerned these might look cheap in my vintage kitchen but they don’t at all! My installer couldn’t get over what a change they made and how easy they were to put up.. Pam. Fri Apr 24 2026

White

This set of 12 drop-in ceiling tiles offers a practical and stylish solution for updating your space. Crafted from PVC, these tiles feature a matte surface that adds a sleek, modern touch to any room. They're rust-resistant, making them a great choice for areas prone to moisture, like basements or kitchens. With their square edge style, these tiles fit seamlessly into standard ceiling grids for a clean and cohesive look. Ideal for both home and office settings, they provide an easy way to refresh your ceiling without a complete overhaul.

Purchased these in black and they are so much nicer than the traditional drop ceiling tiles. This really elevates the room.. Sheena. Chicago, IL. Sun May 24 2026

White

Change the look of a room easily with this product. The pre-notched main covers provide seamless transitions at cross-tee intersections for easy installation.

Just what we needed when we relaxed the tiles but the grid work was still Good just faded In color. This fixed the issue at a great price. Anonymous. Fri Mar 27 2026

White

The CeilingMAX 100 sq. ft. White Surface Mount Grid Kit is an innovative ceiling solution that quickly transforms any space with its easy-to-install snap-in design. Ideal for covering old tile ceilings, floor joists, plaster, or drywall, this system offers a sleek and durable finish without the hassle of demolition. Made from high-grade PVC vinyl, CeilingMAX is rust-resistant, scratch-proof, and saves up to 6 inches of ceiling height compared to standard drop ceilings, making it perfect for low-ceiling areas. Designed to work with any 2 ft. x 2 ft. or 2 ft. x 4 ft. ceiling tiles, this system provides a clean, modern look. Each kit provides 100 square feet of coverage and includes all necessary components for a fast and efficient installation. With CeilingMAX, you’ll enjoy a beautiful, functional ceiling that stands the test of time—backed by a 25-year limited warranty. Transform your ceiling with the CeilingMAX Surface Mount Grid Kit—a simple, effective, and stylish solution for any space!

No. Anonymous. Fri Jan 16 2026

White

This drop-in ceiling tile set tops off your room with a vintage-inspired look. Crafted from PVC, these tiles are both water-resistant and fire-retardant, making them a practical choice for areas like kitchens, bathrooms, or basements. With a square edge style and molded details, they fit seamlessly into standard ceiling grids for a clean and modern finish. Each set includes 12 tiles, providing ample coverage for your space.

Haven’t installed yet, but the tiles look exactly like they’re supposed to and feel like they’re good quality. Ryan. Sat May 16 2026

Add beauty to your home, while keeping access to your electrical cables, pipes and ducts. The Embassy's dropped ceiling kit is installed quickly thanks to an innovative rail and anchoring system, tested and patented. The ingenious concept allows a minimal clearance of only 1-¾ inch between joists and the ceiling all while offering a contemporary design and maximizing the room’s ceiling height. The system offers an adjustable height to adapt to uneven joists. The laminated tiles are both stylish and functional as they are resistant to sagging and easy to clean. This kit comes with 2x4 feet tiles (our other kits are 2x2).

White

This set of 12 drop-in ceiling tiles offers a sleek, modern update to your space. Crafted from PVC, these tiles are both fire-resistant and waterproof, making them a practical choice for kitchens, bathrooms, or basements. The matte surface and square edges create a clean, seamless look that complements a variety of decor styles. Each tile is designed to fit standard grid systems, providing a straightforward way to refresh your ceiling. With their easy maintenance and stylish appearance, these tiles are a great option for adding a fresh touch to your home.

Very easy to install!! We color matched and painted the grids before installing! We will be changing out all of the drop ceiling tiles in our basement!. Danielle. Morehead, KY. Wed Mar 25 2026

White

These elegant stylish 3D PVC ceiling tile designs are excellent matter for remodeling or new construction to a ceiling or wall decoration. These wall panels are easily laid into a standard 15/16" T-bar drop ceiling grid system or glued over any flat substrates. It's made out of lightweight PVC, flexible and will not crack, water-resistant, and corrosion-resistant for exceptional durability, and safe, and fully recyclable. If you are struggling for something splendid to decorate your ceiling or build an accent wall but on a limited budget, the 3d ceiling panels are the best choice. It's stylish, waterproof, durable, and easy to install. It was the perfect way to finish off your ceiling.

I love these tiles! I thought they might be too big of a tile for regular height ceiling but they look great. I glued them up all by myself. I still need to caulk where the four corners met but the tiles were easy to work with. Only issue is finding a crown to look good with the recesses in the tile.. Mindy. Westminster, MD. Thu Feb 05 2026

White

Art3d ceiling tiles/panels are fabricated from classic, stylish, and elegant designs. It’s made of premium PVC, which is thin, lightweight, paintable, humidity and corrosion resistant, and extremely easy to work with. It can be cut with a snip, scissors, or utility knife, and won’t create any dust. It won’t absorb moisture and stain, and won’t crack when moving of it. It’s designed to install both for dropping in a standard 15/16’’ T bar grid system and Gluing up on any flat substrates. Since it’s pretty light, you can process the installation just by yourself.

Love Them ! They are easy to work with and look beautiful.. Olivia. US. Sat Jun 06 2026

Gray

Fasade glue-up decorative thermoplastic ceiling panels provides the classic look of Traditional tin ceilings for a fraction of the cost. Whether you are remodeling an entire room or simply accenting a small area, these ceiling panels create an instant designer look. Unlike Traditional tin panels that require decades to acquire an antique look, these ceiling panels have that turn of the century authenticity right out of the box.

Ms, Theresa was so kind and helpful, she solved my problem with wrong items delivered in the best way. Ms Theresa sets an example how customer service should be done excellently. The item arrived on time and I like it very much, thank you!. Ksenija. Columbus, GA. Mon Jun 24 2019

24" W x 48" L, Antique Gold

The old-world style and modern-day ease come together in legacy faux tin tiles. Intricate design elements with attention to detail, and provide a beauty that is sure to enhance any room's decor. These legacy tiles are made of durable, UV-stabilized 0.030" vinyl. They are water resistant, easy to clean, lightweight, and easy to install and because they are water resistant, legacy tiles are mold and mildew resistant, too. All of the legacy ceiling tiles meet class fire rating standards - often essential for commercial or residential installations that require a fire rating for ceiling tiles to meet local fire codes.

The design adds texture and character while still looking clean and polished. Installation is flexible and straightforward, whether using a drop-in grid or a glue-up application. The vinyl material feels durable, lightweight, and easy to maintain, making it a practical choice as well as a stylish one.. Nicole. Mon Feb 09 2026

White

These elegant stylish 3D PVC ceiling tile designs are excellent matter for remodeling or new construction to a ceiling or wall decoration. The advantages of the material are waterproof, washable, class A fire-rated, hygienic, flexible, lightweight, rust-resistant, and rot-resistant. It's the ideal option for both residential and commercial applications in bathrooms, kitchens, restaurants, school classrooms, hospitals, shopping malls, etc. It's constructed into the standard size 2ft x 2ft, easily fitting the standard 15/16" T grid system.

These are easy to install- way easier than traditional tiles. If you want a more modern feel to your space they are great.. Anonymous. Fri Feb 06 2026

RAISED PANEL #1201 24" x 24" tiles provides a multi-panel visual with a grid-minimizing edge detail that can add beauty to any room.

Product exactly matches what I need.. Jeanne. Montpelier, VT. Fri May 29 2026

CASCADE #1270 24" x 24" ceiling panels will bring interest to your room with its tegular edge and stepped visual.

These replaced the same design tiles installed 26yrs ago that were water damaged. They perfectly matched the older tiles that were kept.. Anonymous. Sun Oct 08 2023

Antique Gold

Transform your space with these premium 2ftx2ft PVC ceiling tiles.Featuring an eye-catching 3D raised pattern for added visual dimension, these lightweight and flexible panels are incredibly easy to install. Versatile enough to serve as both striking drop ceiling tiles or modern wall décor, they are the perfect solution for refreshing old ceilings or adding design interest in both commercial settings and residential renovations.

We ordered the black tiles. They are gorgeous. They made the rooms very dramatic. We have concerns about having to cut them to fit our ceilings due to the raised pattern.. Michelle. Alton, IL. Sun May 24 2026

Our beautiful panel molding and corners add a decorative, historic, feel to walls, ceilings, and furniture pieces. They are made from a high-density urethane which gives each piece unique details that mimic that of traditional plaster and wood designs, but at a fraction of the weight. This means a simple and easy installation for you. The best part is you can make your own shapes and sizes by simply cutting the molding piece down to size, and then butting them up to the decorative corners. These are also commonly used for an inexpensive wainscot look.

Exactly what we were looking for to install in our dining room!. Melinda. Tennessee. Sat Mar 07 2026

Antique Gold

Transform your space with these premium 2ftx2ft PVC ceiling tiles.Featuring an eye-catching 3D raised pattern for added visual dimension, these lightweight and flexible panels are incredibly easy to install. Versatile enough to serve as both striking drop ceiling tiles or modern wall décor, they are the perfect solution for refreshing old ceilings or adding design interest in both commercial settings and residential renovations.

Great looking product, anxious to put it up.. Mary. Saint Louis, MO. Wed Mar 18 2026

This innovative adhesive offers easy water cleanup and is perfect for both indoor and outdoor projects. It's the ideal solution for contractors and DIYers seeking a hassle-free application for a variety of tile projects.

So far works as expected. Lets see over time.. Teri. Virgil, IL. Tue Dec 30 2025

Our beautiful panel moulding and corners add a decorative, historic, feel to walls, ceilings, and furniture pieces. They are made from a high density urethane which gives each piece the unique details that mimic that of traditional plaster and wood designs, but at a fraction of the weight. This means a simple and easy installation for you. The best part is you can make your own shapes and sizes by simply cutting the moulding piece down to size, and then butting them up to the decorative corners. These are also commonly used for an inexpensive wainscot look.

This is really nice panel moulding, it has a very stylish design and very easy to use. It is easy to paint since it is pre-primed and ready to go. I like these products and will continue to use them.. Edward. Galion, OH. Tue Jan 13 2026

Our beautiful chair rail adds a decorative, historic, feel to walls, ceilings and furniture pieces. They are made from a high density urethane which gives each piece the unique details that mimic that of traditional plaster and wood designs, but at a fraction of the weight. This means a simple and easy installation for you. These are also commonly used for an inexpensive wainscot look.

Really beautiful piece. Put it all over my new home and I love the quality. Sarima. Ashburn, VA. Tue Apr 14 2026

Antique Gold

The old world style and modern-day ease come together in legacy faux tin tiles. Intricate design elements with attention to the details, provide a beauty that is sure to enhance any room's decor. These legacy tiles are made of durable, UV stabilized 0.030" vinyl. They are water resistant, easy to clean, lightweight and easy to install and because they are water resistant, legacy tiles are mold and mildew resistant, too. All of the legacy ceiling tiles meet class a fire rating standards - often essential for commercial or residential installations that require a fire rating for ceiling tiles to meet local fire codes.

These ceiling tiles are gorgeous! I used liquid nails to glue them up, but they can also be dropped in. They completely changed the feel of the room. Also, they are light weight, very easy to work with and can be cut with heavy weight scissors (shears).. Sharon. Clinton, NY. Mon May 04 2026

Patina

Talissa Decors faux tin ceiling tiles (PVC) are a part of our from plain to beautiful hours collection, This one comes in this lovely finish and can be used for commercial or residential projects in standard 15/16” grid systems or glued over the most stable ceiling surfaces.

I'm not gonna lie these are pretty fabulous. Teresa. Pittstown, NJ. Wed Mar 11 2026

White

Art3d PVC drop ceiling tiles are lightweight, durable ceiling panels commonly used in both residential and commercial settings. Available in a variety of textures, patterns, and colors, PVC drop ceiling tiles offer a versatile and cost-effective solution.

Good product great easy install and good quality will recommend Chalao the hambo Jan Galahad. Hhh. Las Vegas, NV. Sun Mar 29 2026

White

Upgrade your space with lightweight and durable PVC ceiling panels, ideal for both home and commercial use. Available in a variety of textures, patterns, and colors, these tiles provide a versatile and budget-friendly solution for any ceiling renovation.

Just got these in today, haven’t installed them all yet but they look good. They’re a little thin but seem like they will hold up well. Anonymous. Mon Jun 01 2026

Soniguard Drop Ceiling Insulation is dust, fiberglass, and itch free. Pre-cut for easy installation, it will dramatically increase both the acoustical properties of your Ceilume ceiling, and the thermal properties of any drop ceiling.

Installed in basement. Noticeable difference in sound reduction. It’s not going to reduce noise 100, but it did help. Also helped with temperature. Easy to install. No fiberglass, which my husband was very thankful for as he immediately gets a rash when coming into contact with regular home insulation.. Sara. Sleepy Hollow, IL. Tue Jan 28 2025

Polised Copper

Fasäde decorative vinyl ceiling panels are lightweight, flexible, and easy to install, allowing homeowners to create beautiful and luxurious spaces in their homes! These versatile panels come in many different finishes and are easily cut to fit any size or shape area, giving you the power to update any room.

Awesome! Easy to cut and get on the wall. Hint Order extra for pattern matching!. Ame. Zimmerman, MN. Mon May 11 2020

Transform your ceiling into an elegant, beautiful, and timeless display that will make a statement and add tremendous value to your living spaces Inner Beam 4.5" H x 94.5" W x 2" D Coffered Ceiling is a classic architectural design that brings out depth and dimension to an, otherwise, plain ceiling. Our urethane-offered ceilings are careful, ensuring an authentic look, and compared to wood, they are lightweight, easy to install, and have zero issues with rot, termites, or warping. What was once considered an expensive luxury, is now an affordable pursuit for a home that defines you.

Love it. Great quality and came already put together.. Blake,. Pineville, LA. Wed Jan 08 2025

24" W x 48" L, Antique Brass

Decoraids faux tin ceiling tiles (PVC) are a great way to add a design element to any room. Our tiles can be installed over most surfaces such as popcorn, drywall, stucco, plywood, and most flat surfaces using a construction grade adhesive(Loctite power grab), or you can lay them into standard suspended(drop-in) ceiling systems. They are class "fire-rate, " so whether you have a restaurant, hotel, or residential project, these tiles will add the beautiful and unique look you have always wanted.

Online pictures do not do these any justice. These tiles add such depth to a ceiling and make the room take on an air of elegance it could never have otherwise. Easy to install and keep clean.. Donald. Tonopah, NV. Wed Apr 15 2026

Our beautiful chair rail adds a decorative, historic, feel to walls, ceilings, and furniture pieces. They are made from a high-density urethane which gives each piece unique details that mimic that of traditional plaster and wood designs but at a fraction of the weight. This means a simple and easy installation for you. These are also commonly used for an inexpensive wainscot look.

These are gorgeous. Judy. Gordo, AL. Thu Mar 26 2026

White

These elegant stylish 3D PVC ceiling tile designs are excellent matter for remodeling or new construction to a ceiling or wall decoration. These wall panels are easily laid into a standard 15/16 T-bar drop ceiling grid system.

These are great- light weight and look fantastic . Easy to work with as well. I also used the extras as a wall feature and they are easy to paint as well.. Melissa. Jenkintown, PA. Sun Jun 07 2026

Transform your ceiling into an elegant, beautiful, and timeless display that will make a statement and add tremendous value to your living spaces, Coffered Ceiling is a classic architectural design that brings out depth and dimension to an, otherwise, plain ceiling. Our urethane coffered ceilings are careful, ensuring an authentic look, and compared to wood, they are lightweight, easy to install, and have zero issues with rot, termites, or warping. What was once considered an expensive luxury, is now an affordable pursuit for a home that defines you.

Perfect. Robert. Hot Springs National Park, AR. Mon Jan 22 2024

20" H x 5" W x 5" D

Balustrade is one of the finest architectural elements that exists; and we designed the absolute best balustrade product on the market. Our FiberThane® Balustrade System is a hybrid system that utilizes the strength and durability of fiberglass, and the crisp detail of polyurethane. FiberThane® is the only light-weight system that can span 16' lengths without needing a newel post or column. Not only is it the strongest system available, but with our QuickInstall brackets, it is also the quickest and easiest to install. Additionally, we made sure it is the most cost-effective system you will find!

Excellent product which secured the post securely to wind stand strong winds and heavy rain.. Marcia R. Tue Nov 26 2019

White

These ceiling tiles/panels are fabricated from classic, stylish, and elegant designs. It’s made of premium PVC, which is thin, lightweight, paintable, humidity and corrosion-resistant, and extremely easy to work with. It can be cut with a snip, scissors, or utility knife, and won’t create any dust. It won’t absorb moisture and stain, and won’t crack when moving it. Since it’s pretty light, you can process the installation just by yourself. These fancy ceiling tiles are just a fraction of the traditional tin ceiling cost. If you are struggling for something splendid to decorate your ceiling or build an accent wall but on a limited budget, look no further.

Product was great to work with and looks great when done.. Anonymous. Sun Dec 21 2025

Black

Elevate Your Ceiling Instantly!Transform any room with Art3d modern 3D ceiling tiles. Designed for a effortless drop-in installation on standard T-grid systems, they are the perfect replacement for old tiles. Crafted from lightweight, durable, and water-resistant PVC, they combine lasting practicality with stunning style. Perfect for adding a luxurious touch to living rooms, kitchens, bathrooms, and offices.

Fast delivery and they look great!. Andre. Raytown, MO. Tue Jun 09 2026

Gray/Silver

Masterpiece molding is a very special innovative, exclusive product that enables homeowners to apply beautifully finished molding right out of the box. Crown moldings are designed to cap a wall where the ceiling and wall meet, creating a finished crowning effect on the room. The fact that it comes prefinished out of the box the homeowner can install it at any time with no fair of mess or damage to any existing room decor. It can be easily nailed to the wall with simple finishing nails which the nails can virtually be hidden by locating the nails into the design elements of the molding and gently nailing or gluing.

I ordered the white version and they are a great quality product for my home remodel. Comes in a very manageable size.. Anthony. Mon Dec 22 2025

Our beautiful frieze mouldings add a decorative, historic, feel to walls, ceilings, and furniture pieces. They are made from a high density urethane which gives each piece the unique details that mimic that of traditional plaster and wood designs, but at a fraction of the weight. This means a simple and easy installation for you. The best part is you can make your own shapes and sizes by simply cutting the moulding piece down to size, and then butting them up to the decorative corners. These are also commonly used for an inexpensive wainscot look.

A great product! Easy to cut and install and after painting it looks like real wood. I’m VERY satisfied with this purchase!. Susie. US. Mon Apr 27 2026

Graves and sealed better than expected. Julia. Charlotte Hall, MD. Fri Jan 30 2026

Invoke the feeling of Spanish stucco plaster with 12" x 12" Pinehurst #250 ceiling tiles. Give your room that old world charm you desire.

Worked out great, thank you Wayfair!!. Treva. Columbia, MS. Wed May 15 2024

Bright Coat Chrome, 19" H x 19" W x 1" D

The Attica Ceiling Medallion brings your room to life by adding a unique design element that gives personality to an otherwise ordinary ceiling. With a variety of sizes to choose from, you can transform your room into a talking point or simply give a plain ceiling new life. Being made of thermoformed PVC means a lightweight and easy installation, high durability, and resistance to water, rot, warping, and insects. Ekena Millwork PVC ceiling medallions are perfect for the everyday dryer with their low maintenance, easy installation, and affordable prices.

Very easy to cut and work with!. Suanne. TX. Tue May 05 2026

Warm Gray

Foam Wood Ceiling Planks 39 in x 6 in 48 Pack (78 sq. ft/case) Foam Wood Ceiling Planks are made up of Styrofoam, which is light, easy to cut, easy to install, moisture & mold-resistant, and virtually maintenance-free. Each panel is approximately 39" long and 6" wide and covers 78 sq. ft/case. All of the panels are finished using high-quality techniques to make them look realistic, just like wood.

While it takes a minute to figure the best way to glue them up, they go up super easy and fast and they look fantastic! It was truly a leap of faith to believe these foam strips could look so good, but they do. Stacy. NY. Mon May 11 2026

Our beautiful panel moulding and corners add a decorative, historic, feel to walls, ceilings, and furniture pieces. They are made from a high density urethane which gives each piece the unique details that mimic that of traditional plaster and wood designs, but at a fraction of the weight. This means a simple and easy installation for you. The best part is you can make your own shapes and sizes by simply cutting the moulding piece down to size, and then butting them up to the decorative corners. These are also commonly used for an inexpensive wainscot look.

Hard to find and perfect match!. Suzanne. Tubac, AZ. Tue Apr 28 2026

Steel Gray

Enrich and upgrade your ordinary ceiling with a lightweight hand-painted beautiful medallion. One advantageous aspect of installing our medallions is it can be very inexpensive for the value and positive changes it can bring to a space. Hand-painted medallions add dimension and texture, character, and vintage charm with limitless designs to match every décor style. And we offer the largest collection of designs to give you that distinct look you desire and provide a lasting transformation.

Fast delivery and great price. Beautiful and well made. Love it!. Debra. Johnstown, OH. Mon Apr 27 2026

Crisp lines lend a modern or traditional style, while intricate and elaborate patterns provide elegant detail enhancing the look of any room. You benefit by saving time and money with our corresponding no-miter corner blocks that involve no cutting and less labor, available for select moulding profiles. You can relax in your new space because our mouldings are the highest quality, environmentally friendly material that is essentially maintenance free. Complete projects in hours instead of days, with seamless hassle-free installation. Your new look is sure to evoke envy and inspire everyone to follow suit.

Excellent workable material. Easy to cut and install. Highly recommend.. Otto. Euless, Texas. Thu May 21 2026

Upgrade your home’s seal and style with this 9/16" silicone crown molding trim, a U-shaped self-adhesive caulk tape designed for seamless gap sealing on smooth surfaces. Its innovative concave U-shape fits perfectly on right-angle areas like window sills, bathtubs, baseboards and countertops, eliminating unsightly bulges for a sleek finish. Crafted from premium elastic silicone (far superior to PVC/TPE), it’s flexible, cuttable, hydrophobic and stain-resistant—ideal for kitchens and bathrooms. The 7/16" wide double-sided adhesive ensures strong bonding; pre-heat for better cold-weather stickiness. Install in 3 simple steps for dust, moisture, grease and ant protection.

Transform your ceiling into an elegant, beautiful, and timeless display that will make a statement and add tremendous value to your living spaces, Inner Beam 8" H x 94.5'' W x 2" D Coffered Ceiling is a classic architectural design that brings out depth and dimension to an, otherwise, plain ceiling. Our urethane coffered ceilings are careful, ensuring an authentic look, and compared to wood, they are lightweight, easy to install, and have zero issues with rot, termites, or warping. What was once considered an expensive luxury, is now an affordable pursuit for a home that defines you.

nicely made polystyrene pieces which are well designed, but require an expert carpenter for a quality installation due to slight variations from piece to piece, injected molded from similar but not identical molds. Per my carpenter, these were convenient, but required a tremendous of finesse and adjustments at every miter joint to look right. Quality glue (PL Premium) and a solid substrate that will not move (a grid of 1x3's glued and screwed to ceiling joists) are essential for stability. Overall "a wash" in terms of time and expense compared to having full boxes and mouldings constructed the old fashioned way. For the curved bay windows straight pieces needed to be hollowed out, bent, and carefully glued and tacked in place under high tension. Happy with the results but did not save time or expense compared to old fashioned box beam and molding construction.. Paul. MA. Wed May 25 2022