Built to spec
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Liquid Membrane Waterproofing is seamless, rolled or sprayed waterproofing applied to decks, foundations, and structures. Harrowgate Group self-performs the work to your engineered drawings, load, and finish, and completes it on site across Markham, the GTA, and Ontario.
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Heavy-duty steel and finishes chosen for the load, traffic, and environment on site.
Send specs, drawings, or photos and get a free, no-obligation site visit and estimate with no guesswork.
Installation and site work completed in accordance with Ontario requirements.
Liquid Membrane Waterproofing is seamless, rolled or sprayed waterproofing applied to decks, foundations, and structures. Every liquid membrane waterproofing project Harrowgate Group takes on in Markham is scoped to one site, the ground, the loads, and the constraints assessed first, then the work completed to grade.
Markham liquid membrane waterproofing work centres on decks, plazas, foundations, and planters. The recurring drivers are a seamless waterproof barrier with no seams to fail, each Markham project is scoped to its own situation rather than a standard package.
Markham's need for liquid membrane waterproofing (York Region) is driven largely by technology and corporate campuses, commercial and office, institutional, and industrial development. Markham's technology and corporate campuses along the 404 and 407 anchor a strong commercial and institutional construction market, with Markham Centre densifying. Work favours corporate site development, servicing, and structured parking.
Most of it sits around Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas. Much of the Markham work is for corporate and tech owners, developers, institutions, and the City of Markham, each needing the job built to the drawings, to code, and documented.
Markham buildings vary widely, technology and corporate campuses, commercial and office, institutional, and industrial development, and the right liquid membrane waterproofing approach changes with each. Harrowgate Group reads the property before it scopes the project.
Markham conditions shape the response: corporate-campus site standards, transit-corridor density, and servicing around the 404 and 407. So Harrowgate Group matches the methods, materials, and equipment to the site, and a Markham project rarely needs the same approach as a standard property.
In Markham, Harrowgate Group treats schedule as part of the scope: fast mobilization, the right equipment on site, and the project built in the right sequence so the following trades are not held up.
On Markham work the sequence is fixed: locate and protect what is in the ground, prepare the site, build to the drawings, compact and finish to grade, and restore the surface, documented at each stage.
A Markham liquid membrane waterproofing project rarely involves one party. Harrowgate Group coordinates with your structural and civil engineers, architects, city planners, geotechnical consultants, and the municipal reviewers whose sign-off the work needs, building to the stamped drawings, honouring the design intent, and keeping the Markham project aligned with what was engineered and approved.
Representative Markham work: liquid membrane waterproofing for decks, plazas, foundations, and planters, often near Markham Centre and clients like corporate and tech owners, handled end to end and fully documented. Harrowgate Group also serves nearby Richmond Hill, Vaughan, Scarborough, so projects spanning the surrounding area stay with one team.
Harrowgate Group builds each Markham project to a clear scope: the right methods, the right materials, and results checked against the plan, documented so it holds up to inspection and the project record.
Property owners and managers across Markham choose Harrowgate Group, with 20 years serving the area for liquid membrane waterproofing because the work is licensed, insured, and fully WSIB-covered, backed by fast mobilization. Knowing Markham, Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas, means each project is handled by a team that reads the local conditions, not a distant call centre.
Self-performed on site to the engineered drawings, coordinated with concrete, servicing, and the surrounding work, then a clean, documented finish.
In short: Liquid Membrane Waterproofing is seamless, rolled or sprayed waterproofing applied to decks, foundations, and structures. For Markham projects, it's built to the engineered drawings and the applicable codes, self-performed on site.
Yes, we respond across Markham and the surrounding area. Response time is fast mobilization.
Across Markham, the work concentrates around Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas, each job scoped to its own conditions.
Mostly technology and corporate campuses, commercial and office, institutional, and industrial development, Harrowgate Group serves developers, contractors, municipalities, and property owners across Markham.
In Markham, the work accounts for corporate-campus site standards, transit-corridor density, and servicing around the 404 and 407, so the methods, materials, and equipment is matched to the site.
Pedestrian to vehicular. For Markham, every project is sized to the actual conditions.
Harrowgate Group responds to Markham with fast mobilization, covering Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas and the surrounding area.
All of Markham, Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas and the surrounding neighbourhoods, plus nearby Richmond Hill, Vaughan, Scarborough.
Yes, Harrowgate Group handles technology and corporate campuses, commercial and office, institutional, and industrial development across Markham, from focused scopes to full builds, each set to its own site and drawings.
Cost depends on the site conditions, the ground, the scope, and the engineered requirements, Harrowgate Group reviews the drawings and the site for each Markham project and provides a clear, documented quote.
Yes, Harrowgate Group assesses Markham liquid membrane waterproofing on site and provides a documented scope before any work begins.
Real knowledge of Markham, Markham Centre, the 404/407 employment lands, Milliken and Buttonville business areas, fast mobilization, work that is licensed, insured, and fully WSIB-covered, and full documentation on every project.
Harrowgate Group has served York Region since 2006, 20 years of hands-on experience.
Harrowgate Group surveys and scopes it on site, builds the work to the engineered drawings and the applicable codes, and completes it to grade, handled by one accountable team across Markham.
Yes, Harrowgate Group builds the work across Markham and the surrounding area and manages it end to end, coordinating any engineers, consultants, and municipal approvals the project needs. We do the work, not just hand it off.
Commercial and heavy-civil construction, self-performed for developers, contractors, property managers, and municipalities.
Send drawings, a site plan, or a description of the scope. Harrowgate Group is licensed, insured, and WSIB certified.
Licensed, Insured & WSIB Certified · Self-performed and documented on every job
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Harrowgate Group provides liquid membrane waterproofing, delivered and installed with quote-ready support across Toronto and surrounding Ontario communities.
Companies We've Worked With
Harrowgate Group delivers commercial and heavy-civil construction for developers, contractors, institutions, municipalities, and property groups across Ontario.