203 858 0080 naas@mac.com

We are Roofing Contractors that Specializes in Residential and Commercial Flat roofs

Naas - We are Roofing Contractors for Norwalk, Stamford Greenwich

Naas Ferreira

We are Roofing Contractors for commercial and residential flat roofs in repairs and installation for 20 years plus.

Erik Ferreira - Roofing Contractor serving Norwalk, Darien, Stamford and Wesport

Erik Ferreira

Co-Owner of Flat Roof Doctor. I have been installing and repairing commercial and residential flat roofs for 12 years. Roofing Contractor for Norwalk, Stamford, Greenwich, New Canaan and Westport

Andre Ferreira - A Roofing Contractor since he was 16 years old

Andre Ferreira

 Manager and Estimator for Flat Roof Doctor – I have been installing and repairing commercial and residential flat roofs for over 14 years. Roofing Contractor for Connecticut

Sven Ferreira - Co-owner of Flat Roof Doctor

Sven Ferreira

Assistant Manager and Estimator for Flat Roof Doctor – I have been installing and repairing commercial flat roofs for over 8 years.

Need a New Commercial or Residential Flat Roof?

Watch the video below about EPDM, TPO, and Torch Down roofing systems.

EPDM Rubber Membranes

The video below explains and demonstrates how EPDM rubber membranes are easily punctured.

The video below shows how harmful ultraviolet rays cause premature degradation. 

The video below shows how to lower a drain to prevent pooling water.

Scuppers are the drains on an edge of a roof. Water is funneled to one are where it can spill into a leader or gutter. Scuppers are easier to maintain than inner drains because for the most of the time the debris gets washed out, whereas inner drains have strainers that get clogged with debris easily.

This video shows the repair of a scupper and also the roof around it.

We specialize in Metal roof recovery. If the metal roof is having issues and the leaks are too many to repair, then it’s time to recover it. We have developed a special method to seal the metal and then apply a rubber membrane over the sealant to protect it from ultraviolets.

Repairs on Metal Roofs

  • Patch rusted through areas
  • Flashing on all protrusions
  • Find and repair any leak
  • Repairs can last 10 years and longer

We will find and repair leaks on any roof. No matter what the problem is or how small the job is, we will find the leak and repair it. We make flat roof repairs and installation on commercial and residential roofs.

 Rubber Roof Installation and Repairs


The rubber material that the membrane is made of is called Bitumen. Bitumen and Asphalt are interchangeable words for the same product. When we refer to a rubber roof then we are referring to a material that comes from Asphalt and has been modified, hence the word Modified Bitumen Membrane. This is what gives it the rubberish properties. To understand more read this article about Bitumen

We install rubber roofs over any existing roofing surface. We use the highest quality materials and superior technology.

Roof Surfaces we can Install over:

  • Gravel covered roofs
  • Hot Tar build up roofs
  • Existing EPDM roofs
  • Concrete surface
  • Wood decks
  • Asphalt shingle
  • Metal Roofs

The guarantee of the roof is the same whether we strip and install or go over an existing roof.

Post and Railings on a Residential roof

A very common place for water to leak on a residential roof is from the posts. More often than not we find that the posts on a flat roof are not installed correctly. To fix this problem, the railing has to be removed so a post sleeve can be installed over the post.

In the video below we created a 3 D video to show you how this can be corrected. There are ready-made post sleeves that can be purchased from Home Depot or Lowes that is designed especially for this purpose.

It is best to not to buy the least costly ones because they do not work so well.

Repairing roof related issues

Most of the times a roof can be repaired. Call us and we will give you an honest opinion and save you a lot of money, guaranteed.

What is the best way to do a roof?

1.To strip the old roofing material and install a new rubber membrane or

2. To install over an existing roofing surface.

The answer is: If the existing roofing surface is in a relatively good condition, meaning there is no rotten plywood or decking, the surface is not crumbling or soft, then it’s almost best to go over an existing roofing surface. This is a big time saver and cost as well. Many times the existing roofing adds a added insulation.


There are three main types of drains on a flat roof. Scuppers, gutters and inner drains. It is important to make sure that water can drain off a roof. Water ponding on a roof is not necessarily bad, but the debris that collects in those areas causes the material to deteriorate. It is good policy to keep a roof clean of leaves and twigs.

The easiest way to keep a roof clean is to use a hand blower. It only takes a few minutes every two weeks to blow off debris. This way the drains are kept clean and eliminates the possibility of flooding a roof due to a blocked drain. Part of maintenance of a roof is to make sure that the drains are cleared from debris.

Inner drains are commonly known as a drain that’s somewhere in the middle of the roof. They require high maintenance because all the debris on the roof tends to block the strainer easily. The easiest way to overcome this strainer problem is to install a self-made improved strainer.

This video explains about a perfect Inner drain. This is how drains are supposed to be installed.

Erik Ferreira - Roofing Contractor in Norwalk, Stamford and greenwich

Erik Ferreira – Commercial Roofing Contractor

Erik is my oldest son (roofing contractor) and is 27 years old. He has been in roofing before he left school during vacations. He has decided to take the business further and keeping it in the family. With all the roofing experience and knowledge passed down, you can rest assure to get the best service and product.

Commercial and Residential Roofing Contractors

We are Roofing Contractors for the Installation and Repairs of flat Roofs. With our experience of over 30 years, we can troubleshoot and repair any roof leak. Commercial and residential roofs are all the same. Most roofs can be repaired even if they were badly installed. We service Westchester County and Fairfield County.

Free Estimate call:

203 858-0080

Andre Ferreira - Roofing Contractor in Stamford, New Canaan and Westport

Andre Ferreira – Commercial Roofing Contractor

Andre is the second oldest son (roofing contractor) and is 25 years old. He started when he was 16. He has always been hands on all aspects of roofing. When it comes to troubleshooting a leak, he is the one that beats everyone. Now that my sons are running the business, you can be assured of receiving quality service and knowledge that is passed down.