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Roofing & Waterproofing

KW Construction designs and installs durable, code-compliant roofing and waterproofing systems that keep buildings dry year-round. From tear-offs and recover projects to new membranes and liquid-applied systems, we engineer solutions that fit your roof type, exposure, and budget—without interrupting daily operations.

Our team handles investigation, design, permits, installation, and close-out. We correct chronic leak points at penetrations, flashings, and parapets; upgrade drainage; and deliver clean details that stand up to NYC weather. We also offer manufacturer-backed warranties and preventive maintenance programs to extend service life.

What this includes

Water-test protocols, moisture probes, infrared scans, and reports with prioritized repairs.
TPO, EPDM, modified bitumen, built-up, and cold/PMMA liquid-applied assemblies tailored to your roof.
New flashings, terminations, crickets, and drain upgrades to eliminate ponding and weak points.
Planter/terrace decks, bulkheads, elevator/stair pits, and vertical below/above-grade membranes.

How do I choose the right roof system?

We evaluate substrate, foot traffic, UV exposure, code, and budget, then present options (e.g., TPO vs. modified bitumen) with lifecycle costs and warranty terms.

Can you fix leaks without a full replacement?

Often yes. Targeted repairs to flashings, seams, drains, and penetrations can stop active leaks and buy years of service—after a survey confirms suitability.

Do you provide warranties?

Yes. We offer contractor and manufacturer warranties (typically 10–30 years) depending on system type and scope.

Will work disrupt tenants or businesses?

We phase access, control odors/noise, schedule hot work safely, and maintain egress. Most projects proceed with buildings fully occupied.