About our company

Who we are

Dilmar Group Ltd. is a family owned and operated full service commercial / residential roofing company with over 50 years of experience servicing southern Ontario and beyond. We work to build lasting relationships with our clients and this is achieved by understanding their individual needs, while providing them with the highest quality roof construction for their dollar.  We pride ourselves on our workmanship, but we also feel our one-on-one relationship with our clients is truly what helps set us apart from our competition.

The Premier Roofing Company

A roof is not only for aesthetics purposes, but is one of the most important elements of your building. It protects your building and its valuable contents from the effects of the weather. Any type of leak to your roof can cause irreversible amounts of damage or destruction to the building and its’ property.

Our Mission

Our mission is to provide the best roofing service at an reasonable price without sacrificing quality. You will be satisfied with our work knowing we take the necessary steps to meet your needs and get the job done right.


We service all kinds of commercial and residential roofs. Our team of skilled professional roofers is waiting to hear from you.

Completed 4 ply BUR, tar & gravel commercial roof in Newmarket, ON

Commercial Roofing

We specialize in the installation, maintenance and replacement of Built Up Roof (BUR), Modified Bitumen (MB), and Themoplastic Polyolefin (TPO).

Side view of completed residential single roof

Residential Roofing

We service and install residential single roofs with lifetime warranty, soffit / fascia, gutter guards, steel roofing, custom flashing, and more.

Completed 2 ply modified bitumous membrane, peel & stick, no open flames for safety

Roof Maintenance

Regular roof inspections, maintenance, and cleaning can dramatically improve the lifespan of your commercial roof.

Repair of split in roof, 24 / 7 roof repair, commercial roof

Emergency Services

We are on-call 24 / 7 to provide emergency commercial roof repair for all types of flat roofs. We will stop the leak and prevent further damages.


Dilmar Group Ltd. – Southern Ontario’s premier commercial / residential roofing company. With over 50 years of experience, here are some examples of our work.

Built Up Roof (BUR)

5,000 sqft. Build Up Roof in Etobicoke, ON

Commericial Roofing Project

2 Ply Modified Bitumous Membrane, Peel and Stick

5,000 sqft roofing project in Bradford, ON

Commericial Roofing Project

Split Roof Repair

Emergency Service - Roof Repair

Flat Roof Repair

4 Ply BUR, Tar & Gravel

23,500 sqft. roof in Newmarket

Roof Curb Installation

Flat Roof Service / Installation

Tall Cone Installation

Flat Roof Service / Installation

Built Up Roof (BUR)

50,000 sqft. roof in Mississauga

Our team

With over 50 years of combined experience, checkout some of the Dilmar Group corporate team.

Dylan Yeo

Vice President of Operations

Brendan Hussey

Estimating / Project management

Maggie Furlong

Office Manager

David Dellemora

Residential Sales