Glendora ADU Construction With Ember-Ready Glass

Glendora ADU construction with wide glass that meets ember-resistance rules on mapped lots, a paved patio and shade, from Palmcrest Contractors.

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Fire maps come out early when Glendora's plan reviewer reads an ADU set, because some ground within the city lies in mapped fire hazard zones and a lot inside one has to meet ember-resistance rules. Where a parcel is mapped, that review reaches straight to the wide glass we like to draw: dual-pane units with a tempered layer, screened vents, enclosed eaves and a fire-rated roof covering all have to show on the plans.

Big glass that still meets ember rules

A folding or sliding glass wall can work on a mapped lot. Each panel gets tempered glass in at least one pane, the frame is aluminum or another noncombustible material, and the threshold seals tight so embers cannot slip under. The patio outside is paved with concrete or pavers, and a pergola, when wanted, is built in noncombustible or heavy timber framing. We keep plants and mulch back from the walls. A parcel beyond the mapped boundary keeps the same glass and patio plan with looser material limits.

Placing the unit on a Glendora lot

On a suburban Glendora parcel we tape the yard, mark which main house windows face it and set the unit so its glass looks onto its own patio, with a solid wall toward the main house. Clearance from fences, woodpiles and brush is part of the placement on a mapped lot. The sewer lateral and electrical panel get checked on the same visit. A patio of concrete or pavers also serves as a clear band around the unit. Drawings are sold as a set package, with construction priced after a site visit.

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