Expert Garage Door Repair,
Service, & Installation in
Agoura Hills, CA

The census puts the median build year at 1980, with 49.7% of the 7,486 homes older than that, and it does not sharpen further down: 2,662 units date to the 1970s and 2,860 to the 1980s, a difference well inside the margin the census publishes on either. So the census cannot tell a truck which decade it is driving to. 1980 is a line in the trade as well — DASMA dates steel's move into the residential door market to that year, with nearly every manufacturer making one by 1985 — so where the door is still the one the house came with, which side of it that door fell on is worth asking, and where the springs, hinges and drums lifting it have never been changed, that is 46 years of cycles at this median. The split misses the opener, though: a house from either decade predates both federal opener dates, 1991 for reversing on contact and 1993 for a second entrapment device, so a head unit original to the house was built before both. And the panel answers to something else again. The nearest long-record weather station, 18 km away, averages 115 days a year at or above 90F, and on an insulated bonded-core door DASMA describes the sunward skin growing and the panel bowing toward it, darker and south-facing doors more than the rest — which shows up from inside as the top section scraping the header, or daylight along the top of a closed door.