Simi Valley ADU Construction With Ember-Ready Glass

Simi Valley ADU construction with wide patio glass that still meets ember-resistant rules on lots inside state fire hazard maps. Palmcrest Contractors.

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"Will the fire rules shrink the glass door we want?" In Simi Valley the honest reply turns on the address, since the state fire hazard maps cover some of the city and a lot inside a mapped area has to meet ember-resistant building rules. Those rules shape the glass more than they cut it back: tempered dual panes, a sealed frame and screened vents let a wide opening stay in the design.

Glass that meets ember rules

On a mapped parcel, each window and glass door needs dual panes with at least one tempered, so heat and flying embers are less likely to break through. Roof vents and soffit vents get fine mesh or listed ember-resistant inserts, the roof covering is Class A, and siding is fiber cement or cement plaster. A patio cover or deck attached to the unit uses noncombustible framing or wood treated to resist ignition. If the lot turns out to sit outside the mapped area, the same choices are still offered.

The yard around the unit

Ember rules reach the ground too. We lay the patio in concrete or pavers and keep bark mulch, woodpiles and woody shrubs back from the walls, with gravel or low planting in that strip. A metal or fire-treated pergola gives shade over the glass without adding fuel beside it. The city building department checks the set under state ADU law, along with the fire requirements. The plans carry one fixed fee, with building priced separately after a walk of the Simi Valley lot.

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