Fire repair and hardening in Agoura Hills, Los Angeles County

Exterior Hardening in Agoura Hills

Inland Agoura Hills homes refit with tempered windows, ember-resistant vents and sound cement plaster, laid out to Chapter 7A for the city's review.

Describe the house and the work

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Agoura Hills lies inland, in the Conejo Valley, and a house in an inland suburb of this kind generally has to cope with strong sun, dry wind and now and then a heavy storm. Those conditions dry out wood trim, open hairline cracks in plaster and wear down window seals. Fire hazard maps cover portions of the city as well, which can bring ember-resistance requirements to an exterior repair or rebuild there.

Cement plaster that keeps its seal

Stucco is a fire-rated skin while it stays whole. Once cracks open and water gets behind it, the lath can rust and the sheathing can soften, and the wall loses both its weather seal and part of its fire resistance. We sound the wall, mark hollow areas, and cut out any section where the backing has failed. A fresh weather-resistive barrier goes on in lapped layers, then new lath, a weep screed at the base, and new plaster built up in coats. Fine cracks over sound backing get an elastomeric patch blended into the finish.

Openings and vents in a fire area

Windows, doors and vents are where a wall is most likely to let a fire in. Tempered glass holds up to radiant heat much longer than annealed glass, so each replacement window is ordered with a tempered exterior lite in an insulated unit. An entry door should be a solid core or steel slab, sealed at every edge. Attic, gable and foundation vents are replaced with listed ember-resistant units. Each opening is flashed into the barrier in shingle order so water moves out, and the plaster around it is patched to match the wall. The City of Agoura Hills reviews the permit.

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