Roof repair near Moffett Park, Sunnyvale

Moffett Park is mainly a business and research district, so roof repair questions here usually come from three kinds of property: homes and apartments nearby, small mixed-use or multi-tenant buildings, and flat-roofed business buildings. Call (669) 240-7171, tell us which one you have, and we will say whether we are a good fit.

Roof repair for properties in and near Moffett Park

Our focus is residential and small-property roof repair. If your building is a large commercial or industrial roof, say so when you call, because that kind of work can call for different crews and equipment, and we will tell you honestly whether it is a fit. For everything else, the problems are familiar: leaks, worn roofing, drainage trouble and storm damage.

Homeowners and renters will find the most useful details on our main roof repair page for Sunnyvale. The rest of this page is for people responsible for a business or multi-tenant building.

Project photo placeholderAdd: a recent project photo from Moffett Park. Only name the area if the job was really there.

Flat roofs on business and mixed-use buildings

Most of these roofs are flat or low-slope, and they behave differently from a house roof. For the full background, read about flat roofs on commercial and mixed-use buildings. These are the points that matter most on a working building:

• Rooftop equipment. Air conditioners, exhaust fans, vents and solar arrays all sit on or pass through the roof. Each mount and penetration needs a lasting seal.
• Service traffic. Technicians who reach the equipment walk the roof, and repeated foot traffic scuffs and punctures the membrane. Walkways help.
• Drains and scuppers. They carry water off the roof, and leaves and debris block them. A blocked drain turns into ponding, which wears the surface.
• Seams and edges. Split seams, edges that have pulled up and failed sealant at curbs and parapets are frequent leak points.
• Hidden moisture. Water can travel under the membrane and soak insulation, so the stain inside may sit far from the opening.

If you aren't sure where water is entering, read about tracing a leak on any roof type before you guess.

Who is responsible for the roof?

In a leased building, roof responsibility depends on the lease. Some leases make the landlord responsible for the roof. Others pass repair costs to tenants. Owner-occupied buildings are simpler, since the roof is yours.

• Read the lease for the sections on roof, repairs and maintenance.
• Report leaks in writing to the landlord or property manager, with photos and dates.
• Get approval first. Don't hire a roofer to work on a building you lease unless the owner agrees.
• Ask about the roof warranty. Some roofs are under an installer or manufacturer warranty that repairs must respect.

This is general information, not legal advice. Your lease and local rules take priority.

Protecting people, equipment and operations

A leak in a business is about more than the roof. Water can reach computers, inventory and electrical equipment. While you arrange a repair:

1. Keep people clear of wet areas near electrical panels, outlets and light fixtures, and call an electrician if water is close to wiring.
2. Move equipment, records and stock away from the leak, or cover them with plastic.
3. Contain the water with buckets, sheeting or absorbent material.
4. Document everything with photos and notes, including damaged items and when the leak began.
5. Notify the owner, tenants who are affected and your insurer. Policies differ on what they cover, so ask before you commit to repairs.

If water is coming in and a repair can't start right away, see protecting a building until repairs can start for how temporary covers work.

What to tell us when you call

• The type of property: home, apartment, small mixed-use or commercial.
• Your role: owner, manager or tenant.
• The roof type and roughly how large the building is, if you know.
• Rooftop equipment, such as air conditioners, vents or solar panels.
• How the roof is reached: a hatch, a ladder or an outside stair.
• Any business hours, tenant notice or security rules that affect when work can happen.

What to ask any roofer about a business roof

• What type of membrane is on the roof, and is the repair material compatible with it?
• Will the work affect any roof warranty?
• How will the crew reach the roof safely and protect people below?
• Can the work be scheduled around business hours?
• Will you provide proof of insurance and a written scope of work?

Other parts of Sunnyvale

If your property is in a more residential area, see the pages for Lakewood Village homes and Central Sunnyvale roofs.

Questions about this repair