We started Inter-Spec Glazing because too many homeowners were getting substandard installations at premium prices.
Installation isn't just about fitting a window into a frame. It's about understanding building physics, architectural context, and long-term performance.
We measure thermal bridging. We assess structural load paths. We consider future maintenance access. These aren't extras—they're fundamental to installations that last.
Every installer on our team holds current FENSA certification. They know building regulations because they helped write the local guidance.
We source exclusively from manufacturers with documented quality control processes. No offshore shortcuts.
If we say three days, we mean three days. Rush jobs compromise quality, so we schedule realistically.
Our quotes break down materials, labor, and compliance costs separately. You see exactly where your money goes.
Our process eliminates the usual installation surprises. We survey twice—once for initial assessment, again for final measurements before ordering materials.
Installation happens in controlled phases. We protect your interior, handle waste removal daily, and complete building control notifications before we leave.
Our team has collectively installed over 15,000 windows and doors across residential and commercial projects. We've handled everything from conservation area restrictions to new-build volume contracts.
That breadth means we've solved most installation challenges before. Unusual opening sizes? Non-standard wall construction? Listed building constraints? We've developed reliable solutions.
We warranty our installations for 12 years as standard. Not because regulations require it, but because proper installation should last.
When you call five years after installation with a question, we'll remember your project. We keep detailed records and maintain relationships beyond the payment date.
