Collect 1 Cosma Point for every $1 you spend online and unlock savings on your next online purchase!       |             How Cosma Points Work!      

Professional Membranes & Underpad Solutions in Whitby | Cosmaroma

At Cosmaroma, we offer an exceptional selection of premium membranes and underpads that provide the essential foundation for successful flooring installations. Whether you’re a professional contractor working on commercial projects or a homeowner tackling renovation applications, our comprehensive range of membrane products and specialized underpads in our Whitby store is designed to meet every project requirement. From high-performance moisture barriers and sound-dampening systems to protective membranes, vapour control solutions, and professional-grade installation accessories, we offer the ideal solution for your every flooring need.

Our showrooms and online store feature an impressive array of membrane products and underpads, which professional Whitby contractors and homeowners alike consistently choose for their outstanding performance and reliability. These versatile flooring protection systems complement both demanding commercial installations and residential renovation projects alike. They provide the moisture control and structural support needed to achieve professional results with remarkable effectiveness and lasting satisfaction.

To ensure complete project success, Cosmaroma carries a comprehensive range of membrane and underpad accessories — including premium moisture barriers, high-performance sound dampening systems in various densities, vapour control membranes, protective underlayment films, effective sealants and tapes — all available to perfectly complement your chosen flooring requirements. Whether you’re working on your entire flooring project or tackling specialized installation applications, our high-quality products bring together effectiveness and convenience in every detail.

Our experienced team is dedicated to helping you select the best membrane or underpad solution to match the requirements of your Whitby-area project and desired level of installation excellence. Whether you need specialized moisture barriers for basement applications, professional-grade sound-dampening systems for multi-storey buildings, or comprehensive protection systems for large-scale applications, Cosmaroma is your trusted flooring supplier to reflect your project standards, with options engineered for exceptional performance and installation quality.

Why Choose Us in Whitby?

SHOP ONLINE

Explore our full selection anytime through our user-friendly website. Browse our complete range of membrane products trusted by customers nationwide, and choose from our diverse collection of underpads, installation accessories, and professional tools — all from the comfort of home.

DELIVERY

We provide Canada-wide shipping at competitive rates, making it convenient to purchase flooring solutions anywhere across the country. Our dependable and prompt delivery options ensure that your products arrive on time and in perfect condition.

EXPERT SUPPORT

Have questions or need guidance? Our knowledgeable team is ready to help. We offer personalized recommendations for membranes, underpads, and installation solutions to ensure a seamless shopping experience.

Shop Now for the Best Selection of Membranes & Underpads

Why Choose Professional Membranes for Your Projects?

Selecting high-quality membranes and specialized underpad products is one of the smartest investments you can make for your project’s success, installation quality, efficiency, and flooring impact, as well as its long-term durability. Professional membranes not only enhance the performance quality of your projects but also improve your installation efficiency and protect your investment. Whether you are working on existing flooring installations or investing in specialized membrane products for demanding applications, Cosmaroma’s Whitby stores offer effective and reliable solutions tailored to your specific needs. With a variety of flooring products trusted by Whitby professionals, Cosmaroma makes it easy to complete your projects with authentic installation excellence and practical effectiveness.

Explore the Right Membranes for Your Projects

Every project deserves products that reflect flooring standards and meet practical demands. Our stores offer a carefully curated selection of flooring solutions that customers trust. They are manufactured from premium materials and come in an extensive range of applications to enhance any flooring project. Whether you're looking for premium moisture barriers for basement applications, versatile sound-dampening systems in various densities for noise control, specialized vapour control membranes for demanding installations, or comprehensive protection systems for project maintenance, you'll find the perfect match in our collection.

Client Testimonials

Client Reviews

Cosmaroma Home Renovation Supplies - Whitby Mall place picture
4.9
Based on 253 reviews
Nell G profile picture
Nell G
8 months ago
It's always a pleasure to shop at the Whitby location! We're always greeted by kind staff and great prices! Big shoutout to Laura and Mike who has been a pleasure to interact with. Laura has been very knowledgeable and helpful. This is definitely a staple location when it comes to buying supplies.
brian h profile picture
brian h
9 months ago
Great gem of a renovation store in the middle of Whitby. Staff are all very helpful. Blake was great and very tolerant in assisting me with my flooring selection for my basement, as it morphed into main floor bathroom renovation and hardwood stair caps. This place has virtually everything you need for home renovations at great prices. Also, the helpful staff loaded all my flooring into my vehicle. What an added and unexpected bonus.
Outstanding customer service, product knowledge and competitive pricing. The owner Mike and his team member Blake assisted me with professionalism, care and ease. I would go as far to say this is next level when shopping as a contractor or personally.
They have a wide range of products at great prices.
Thank you to the entire Cosmaroma Team!!!!
Jim terkalas profile picture
Jim terkalas
9 months ago
What an amazing place to shop, not only do they have the best prices, but they have an amazing team. Today I had a delivery of 50 large boxes of engineered flooring, each one of these boxes had to weigh at least 80 LBS. My delivery was with Maurice, he was pleasant, and probably one of the hardest working people I have ever met. Maurice unloaded each box by himself and put them where I wanted them. We had a coffee and cookies together, and he told me about his family, and how he enjoyed working with Cosmaroma for over 4 years. What an unbelievable guy, i wish their were more Maurice's in this world. Thank you Maurice, it was a pleasure meeting you.
We cannot say enough good things about the Cosmaroma team! From the staff at the counter to the staff in the back! Reasonable cost for materials (especially in this day and age) We refer many Clients to visit Cosmaroma and we thank them for helping MDS and our Clients through the process!
Taylor Walker profile picture
Taylor Walker
10 months ago
Anytime someone asks me about home renovation supplies I ALWAYS recommend Cosmorama. The staff are competent and extremely knowledgable. They will always do their absolute best to make you leave happy wether that means getting you the right product, the best price or the best care while loading/delivering. Ive had the pleasure of personally dealing with Andre, Blake, Anthony and Mike and every single one of them exceeded my expectations in helping me with my purchase. Cosmorama is the ONLY place I would tell anyone about involving home renovation supplies. 10/10
Carlo Calderone profile picture
Carlo Calderone
10 months ago
I've been shopping and buying our building materials from the Whitby location...Mike, the General Manager is great person with Customer relations that knows his regular clients ! The staff seems follow the same pattern of Customer Service !

Great place to shop and recommend this store for quality products and affordability !
Derek Murray profile picture
Derek Murray
10 months ago
Im a local contractor to Durham Region I've been going to cosmaroma since they opened in Whitby. I always have a great experience with their staff and Mike the manager always goes the extra mile to take care of me. Their products are great and the prices can't be beat. I have been and will always recommend cosmaroma to my colleagues and clients.
You can't go wrong with them!!
Shout out to Hasan, Blake and Nick aswell 👏
Granton profile picture
Granton
10 months ago
AMAZING service, super friendly and great prices. Mike went out of his way to help meet our renovation dates. Great flooring for a great price. Best hardware store in Durham. We have used this place many times and we’re never disappointed!
Kevin Ausman profile picture
Kevin Ausman
10 months ago
⭐️⭐️⭐️⭐️⭐️ Absolutely Perfect for Our Dojo - Unbeatable!

I am absolutely blown away by my experience with Cosmaroma. I was renovating the front area of our dojo and needed flooring that could handle impact, provide solid footing, and look the part. Cosmaroma delivered on every single level.

From the moment I walked in, the service was incredible. The staff took the time to understand my very specific needs for a martial arts space. They didn't just sell me a product; they provided a solution. The price was shockingly reasonable for the quality, and they helped me find the perfect product within my budget.

And the flooring itself? Unbelievable. The look, the feel, the durability – it's absolutely perfect. It has the perfect amount of grip and cushioning for training, and it has completely transformed the room.

I cannot recommend Cosmaroma highly enough. If you're doing any home renovation or business, especially for a specialized space, this is the only place you should go. Thank you for helping me create our dream dojo!
Hassan was extremely helpful and patient while helping us choose our flooring. His knowledge and expertise gave us the confidence we needed to handle our renovation. As we continue to take on new renovations in our home we will definitely return to Cosmaroma.
Jim Terkalas profile picture
Jim Terkalas
1 year ago
This is my new go to for DIY! Awesome selection, prices are great, and the service top notch. Today I was served by Nick, very knowledgeable, took me to what I was looking for, explained what I needed, and how to do it. Awesome!!!
Boss profile picture
Boss
1 year ago
Excellent people to deal with for my home and commercial renovations. They carry a vast variety of items, that make this into a one-stop shop for any project.
M John profile picture
M John
1 year ago
Came just to look around and had a great experience. Met Blake and he was extremely knowledgeable and spent over 1 hour answering all my questions. Best customer service. I will recommend Blake and this location to everyone.
Visar Metaj profile picture
Visar Metaj
1 year ago
They are awesome here. Competitive price. Blake was doing fantastic job and helped me get the right products for my project. Highly recommend this place.
Justin Chang profile picture
Justin Chang
1 year ago
You can find most of your construction house hold need . Place has friendly staff .
Fraser Base profile picture
Fraser Base
1 year ago
Friendly very helpful staff and fantastic prices.
Highly recommend Cosmaroma.
Kiazand Malik profile picture
Kiazand Malik
2 years ago
These guys are great best customer service. Everything with a smile . Highly recommended
Corey profile picture
Corey
2 years ago
Discovered this place through FB marketplace for spray paint and stumbled on their wide selection of other things at better prices then the big box stores. I've been buying paint off of them regularly ever since.
Ryan Tierney profile picture
Ryan Tierney
2 years ago
Excellent customer service from Nick and his staff at the Whitby location.
Blake was awesome, helped us find what we we were looking and gave us good info on flooring as well!
Katelynn Bellows profile picture
Katelynn Bellows
2 years ago
Dalia was amazing to work with! I was sourcing a vanity for a bathroom reno and she made the whole process simple, efficient, and enjoyable! I purchased a custom made vanity in less than 10 minutes after having searched for weeks for one that I liked! Thank you thank you thank you!
Mac McNeil profile picture
Mac McNeil
2 years ago
Needed a specialty product we found on the web and these guys have the Canadian exclusive license. They had the product on display for us to examine but hold only limited stock. No problem - the young lady we dealt with confirmed stock availability with the US supplier and took our order. All the staff we dealt with were super friendly and professional even offering treats to our wee dog.

The in stock product mix was also large and eclectic for home renovators.
Tricia Leone profile picture
Tricia Leone
2 years ago
Cosmaroma has plenty of selection and great prices. Special shout-out to Dalia who was patient and understanding with a first time home owner like myself! Appreciate all the help and tips!
Wonderful Customer Service, great experience!

Dalia was very knowledgeable, kind and made it a great experience. We came in a couple of times before making our final decision and she remembered the exact flooring that was our top choices each time we visited. She remembered everything she said she would do, and what would happen during the purchased happened.

We were told it would take some time for the warehouse to get our order together but it felt like no time at all.

We would definitely be back again for our home renovation needs!
Susan Mak profile picture
Susan Mak
3 years ago
We had a 10/10 experience with Cosmaroma and would definitely use their products and services again. They did a $32K job for us six months ago, and we are just as pleased today as we were on the day they finished the job. We had our stairs re-built and hardwood put down, to replace old carpet throughout most of the house.

Everyone in the showroom was pleasant to deal with, and there was zero sales pressure, which I greatly appreciated. Moe, Nick and Hassan patiently answered my many basic questions without making me feel foolish. There seemed to be repeat customers because many people who came in to browse were already on a first-name basis with the sales staff .

Duong and Toan redesigned our stairs and put down the hardwood, and we cannot say enough nice things about this phenomenal installation team. They were cheerful, reliable, and did their work with great precision. They showed up exactly when they said they would, and they cleaned up after themselves as they went along.

The hardwood that we chose was from Floorest, in the Falcon Brown colour, sized 6 1/2" x 3/4". It looks beautiful, especially when the sunlight highlights it. The hardwood seems durable, as we don't have any dents in the flooring. All in all, we are very satisfied customers.
Bhanu Suresh profile picture
Bhanu Suresh
5 years ago
Quality products, friendly and timely service and reasonable price. We have used their product and services last year( Hard wood installation for our living and bedrooms). Purchased vinyl flooring today for an unbeatable price.

Frequently Asked Questions

Everything You Need to Know About Buying Membranes & Underpads

A: We offer a comprehensive selection of membranes and specialized underpads, including premium moisture barriers for water protection, sound-dampening systems in various densities, high-performance vapour control membranes, protective underlayment films, effective sealants and installation tapes, versatile installation accessories, and professional-grade flooring protection systems. Whether you’re looking for flooring solutions for residential projects, specialized membranes for commercial applications, heavy-duty products for demanding spaces, or professional installation systems for detailed use, you’ll find high-quality options to suit every flooring requirement and budget.

A: Yes! You can purchase flooring products and have them shipped directly to your home or project site. We also offer Canada-wide delivery at competitive rates, with options for local pickup at our store locations across Ontario and Quebec, including Whitby, North York, Mississauga, Ottawa, Barrie, London, Montreal, and many other cities.

A: Absolutely. In addition to our wide range of membrane products that customers trust, we also offer specialized flooring accessories, including high-performance installation systems, professional kits, precision tools, and project accessories, to help you achieve professional-quality results with coordinated efficiency and reliability.

A: Our Whitby stores’ collection of membranes includes options suitable for every application and flooring vision. For professional contractors and installers, we offer commercial-grade products, specialized flooring systems, and professional installation solutions. Homeowners might consider our premium moisture barriers, effective sound-dampening systems, and user-friendly flooring kits. All our flooring products are selected for their quality and performance in various residential and commercial applications.

A: Shopping at Cosmaroma offers several advantages, including access to flooring products with exceptional installation effectiveness, expert guidance from our knowledgeable team, and convenient online ordering with dependable delivery. Customers appreciate our comprehensive selection, which combines high-quality membranes with practical flooring features, along with our commitment to providing both professionals and homeowners with the right flooring solutions to complete their projects successfully.

Get In Touch

We Are Here To Help

Contact Our Team

If You Need More Information

Send Us a Message

Question or comment?
Please complete the form below.

    You were not leaving your cart just like that, right?

    Save this cart for later?

    Enter your details so you can return to your cart later on! Just in case you want to come back!