Commercial & Low-Slope Roofing
Shops, offices, retail pads, churches and HOA buildings around Placer County trust Allison Roofing to keep the water out without shutting their doors. Flat and low-slope systems installed and maintained by the same family crew.
Low-slope is a different animal
A flat roof fails differently than a steep one — it ponds, it moves, it bakes in the Central Valley sun, and the details at every curb, drain and parapet are where it lives or dies. We build and restore commercial roofs with systems designed for that reality, and we schedule around your business so your doors stay open.
Systems & services
- TPO single-ply — 60-mil mechanically-attached and fully-adhered membrane, heat-welded seams, reflective white for Title 24 cool-roof compliance.
- Modified bitumen — two-ply torch and cold-applied systems for roofs with heavy foot traffic and rooftop equipment.
- Silicone restoration coatings — a seamless membrane sprayed over a sound existing roof, often renewing a warranty at a fraction of a tear-off.
- Maintenance & leak response — scheduled inspections, drain clearing and repairs that keep your manufacturer warranty valid.
Commercial projects are quoted per building after a rooftop survey — square footage, system, insulation, number of penetrations and access all drive the number. Call (916) 742-0318 and ask for a commercial site visit.
Roof leaking? Storm just rolled through?
We keep tarp crews on call for Roseville, Rocklin and Granite Bay. Call now and we’ll stop the water today.