Spray foam roofing in Long Beach, CA

Spray foam is applied as a liquid from a heated spray rig. Two components mix at the gun and expand many times over within seconds, hardening into a closed-cell foam that bonds to the surface below. Because it goes on as a liquid, it wraps around pipes, curbs and conduit without seams. Because it can be built thicker in some areas than others, it can be shaped to push water toward drains.

Our crews apply spray foam on Long Beach commercial buildings, apartment roofs and some flat-roofed homes. This page covers how foam is built and coated, the conditions it needs during application, and the ongoing care that keeps a foam roof working for a long time.

How foam builds slope and insulation at once

The foam itself is the waterproofing body and the insulation. Each pass adds thickness, so the applicator can build up low areas and thin out near drains, adding slope where the old roof sagged. Closed-cell foam resists water and adds insulating value to roofs that often had little or none.

Foam alone cannot handle sunlight. UV breaks down the surface within weeks if left bare, so every foam roof gets an elastomeric coating, often silicone or acrylic, sometimes with granules broadcast into it for traffic areas.

• Fills ponding areas and adds positive slope
• Wraps penetrations with no seams to fail
• Adds insulation to uninsulated roofs
• Lightweight compared with tearing off and rebuilding

Weather and site conditions for spraying

Spray foam is sensitive to conditions. The roof surface must be dry, clean and within the temperature range the foam calls for. Wind carries overspray, so we stop spraying when gusts pick up and mask nearby cars, walls, windows and equipment before starting. Santa Ana wind days and marine layer mornings both affect our schedule.

On occupied buildings, we shut down rooftop air intakes during spraying and plan with tenants and owners so no fresh air is pulled in near the work. Overspray control is planned before the rig ever starts.

Coating thickness and inspection

The coating is the part of the system that wears. It must be applied at the specified thickness, usually in two coats of contrasting colors so we can see full coverage. Thin coating is a common cause of early foam roof failure.

We take small samples of the cured foam and coating to check thickness, then patch the sample spots. We also look for surface texture, because a rough, popcorn-like foam surface is harder to coat evenly than a smooth orange-peel finish.

Recoating and long-term care

A foam roof can last a long time if the coating is renewed before the foam is exposed. We suggest a yearly inspection to look for bird pecks, impact damage, cracked coating and clogged drains. Small damage is repaired by cutting out the spot, refilling with foam and recoating.

When the coating has worn thin across the roof, the roof is cleaned and recoated, which usually costs far less than replacing the roof.

When to call about spray foam roofing

Spray foam on Long Beach commercial and apartment roofs

Foam is a good fit for many Long Beach warehouse and light industrial roofs near the port, Westside and along Cherry Avenue, where roofs carry lots of equipment and conduit. It also suits apartment buildings with crowded rooftop mechanicals downtown and in Alamitos Beach. On homes, foam is usually a choice for mid-century flat roofs with poor insulation.

Our dry season gives long windows for spraying, while marine layer mornings near the coast and Santa Ana wind days can shift start times. Dense blocks with cars parked close to the building make overspray control a serious part of planning. The City of Long Beach requires a building permit for re-roofing, and we confirm Title 24 cool roof needs for the coating before ordering material.