ROOF COATINGSilicone & Acrylic

A roof coating buys years back on a Nob Hill flat roof that is weathered but still sound. Salt air, marine layer and long damp mornings keep a low-slope roof wet longer, so seams and ponding spots are where the trouble starts.

Serving Nob Hill and nearby

We coat commercial and residential low-slope roofs throughout Nob Hill and the surrounding San Francisco County communities, including Russian Hill, Chinatown and Pacific Heights.

Does your Nob Hill roof need coating?

A coating earns its keep on a roof with these problems:

• Low spots that hold water for days after a storm
• Flashing and penetrations that leak while the field of the roof is still solid
• A building that cooks in summer and runs the air conditioning hard
• Seams and laps that have opened up and started weeping
• A roof with years left in the deck and insulation underneath

When coating is the wrong call

If we find saturated insulation or a failing deck on your Nob Hill roof, we say so. Coating over a wet roof traps the water and costs you twice.

Choosing the system for your Nob Hill roof

• Silicone: the pick for roofs that pond. It handles standing water, resists UV without turning brittle, and lasts longest of the two.
• Acrylic: the pick for roofs that drain clean. Lower cost per square, excellent reflectivity, and easy to recoat later.
• Both go down seamless, so there are no laps or fasteners for water to work into.
• Both drop the roof surface temperature sharply, which shows up on the cooling bill of a conditioned building.

Working in Nob Hill

What a roof faces in Nob Hill is specific, not generic: nothing dries quickly here, so a small leak stays wet. 338 miles northwest means a free inspection costs you nothing but an hour.

The roofs in Russian Hill, Chinatown and Pacific Heights are built much the same way, and they fail the same way.

• Gutters are pulled and refitted where they block a proper drip edge.
• Skylights are flashed new rather than reused, because that is where the next leak starts.
• Satellite dishes and A/C line sets are re-flashed, not just set back down.
• Gutters are pulled and refitted properly instead of being crushed by a ladder.
• Tear-off debris leaves the same day; nobody is left with a pile over the weekend.

We would rather be on your roof in September than during the first atmospheric river. We will tell you if the roof has five years left, because that is also useful to know.

What you get out of it

A silicone system at the right thickness over a properly prepped roof gives you ten years and up, and acrylic is close behind on a roof that drains well. Both systems are renewable: when the time comes you wash the roof and add another coat instead of starting over, which is why building owners keep coming back to them.

What the work looks like

• Inspect and measure, including core tests where we need to know what is under the membrane
• Clean the roof — power wash, remove dirt, chalk and loose coating
• Repair: cracks, open seams, failed flashing, blisters and bad penetrations
• Prime where the substrate calls for it
• Apply the coating in multiple passes to the specified thickness, seams and details first
• Final walk for even coverage and thickness, then clean up the site

What roof coating costs in Nob Hill

Because the work is additive, most buildings stay open and in use while we are on the roof.

Coating is priced by the square foot once we know the condition and how much prep the roof needs, and the number comes to you in writing before anything starts.

What separates a good job from a cheap one

Driveways get swept and gutters cleared as part of the job, not as an extra.

• A hot attic shortens any roof, so the venting is part of the quote, not an upsell.
• Keep the paperwork: it transfers if you sell the house.
• Underlayment is where corners get cut; we use the system the manufacturer warrants.
• Soft decking gets replaced, not covered - we quote a sheet count and show you the bad bays.

Talk to a Nob Hill roof coating contractor

The estimate is free. Call (818) 275-0921 and we will measure your Nob Hill roof, check the deck, seams and drains, and tell you plainly whether coating is the right call.