Customer focused services
Direct answers to the questions contractors, estimators, and facility managers ask us most — about scope, codes, materials, and working with K. Guller Insulation. Organized by topic; each answer links to the full service page.
Line-item coverage of the spec sections (07 21 00, 22 07 00, 23 07 00, 07 84 00 if carried), stated materials per ASTM, inclusions/exclusions for fittings, jacketing, and firestopping, and schedule commitments. Vague bids become change orders.
At bid — and again before ceilings close. The most expensive insulation problem is the one discovered after close-in.
For prevailing-wage/PLA work it’s required; elsewhere it’s a training question — vapor-barrier and finish quality is where apprenticeship shows.
The adopted energy code — IECC or ASHRAE 90.1 — via its pipe and duct insulation tables; PA, NJ, and DE adopt different editions, so we bid to the project’s governing edition.
Yes — energy-code inspection for thickness/coverage, and special inspection for firestopping on certain occupancies.
ASTM C547 fiberglass with ASJ jacketing for most hot and chilled systems; elastomeric and cellular glass where condensation or vapor drive demand it.
Decades if the vapor barrier and jacket stay intact — which is why damage repair is cheaper than replacement.
Often under two years on hot systems; an NIA-method energy appraisal puts a real dollar figure on each surface.
It varies by system, material, and access — per-LF pricing without drawings is guesswork. Send the spec and drawings for a real number
