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Schluter Windows & Doors: The Redwood City Owner’s Guide
We stock and install Schluter-compatible windows and doors in Redwood City, with typical replacement projects running $4,500-$15,000 for window replacement and $8,000-$25,000 for impact-rated installations depending on frame condition and opening count. Most Schluter hardware, weatherstrip, and operator parts are available same-day through our supplier network. Redwood City homeowners usually discover a problem when the window won’t stay open on the windward side of the house, or when the door threshold starts leaking during the first heavy rain after a dry summer - the seals have hardened and the drainage path is blocked.
Which Schluter Models This Applies To
Schluter does not manufacture its own window or door units; the brand is known in North America primarily for tile-setting membranes, profiles, and waterproofing systems. When Redwood City homeowners ask about “Schluter windows and doors,” they typically mean one of two things: a window or door assembly installed with Schluter waterproofing integration (common in tiled entryways, showers with exterior walls, or mudrooms with direct exterior access), or a part search where the Schluter name has been confused with another manufacturer. We’ve seen this mix-up enough times to know the difference matters for parts matching.
If your assembly includes Schluter-KERDI membrane at the sill or Schluter-DITRA under the threshold, the critical compatibility points are the membrane thickness (1/8-inch standard for KERDI, 1/4-inch for DITRA-XL) and the weep screed depth. The wrong combination traps water against the frame. For actual window and door hardware, we source from the OEM of your unit - Pella, Andersen, Marvin, or JELD-WEN are common in Redwood City homes built 2015-2025 - and verify Schluter membrane clearance before ordering. We carry replacement weatherstrip, sill pans, and compression seals that interface correctly with Schluter profiles; OEM operators and hinges we order to spec after measuring your existing unit. Measure twice, document once, build it so it doesn’t come back.
Signs Your Schluter Windows & Doors Is Failing

- Window drifts closed or won’t hold position. The balance mechanism, usually a constant-force spring or block-and-tackle system, has lost tension. In Redwood City’s salt-air exposure near the bay, we’ve seen balance corrosion accelerate from the normal 10-15 year lifespan to 6-8 years on west-facing units.
- Water staining at the interior sill after rain. The end dam or sill pan has separated from the Schluter-KERDI membrane, or the weep holes are clogged with construction debris. This is not a “window leak” in the frame itself; it’s a drainage failure at the membrane interface.
- Door sticks in summer, gaps in winter. The jamb has shifted relative to the Schluter profile, usually because the rough opening wasn’t shimmed independently of the membrane layer. Redwood City’s clay-heavy soils in the Farm Hill area put particular stress on door frames.
- Visible separation between tile and frame. The Schluter profile (often SCHIENE or RONDEC) has pulled away from the setting bed, meaning the waterproofing seal is compromised even if water hasn’t entered yet.
- Hardware operates with grinding or catching. The operator gears have worn, or the hinge screws have backed out of the composite frame material. On units with integrated Schluter trim, the trim profile can mask early screw loosening until the hinge tears free.
Before
AfterReplacement Cost & What’s Included
For Redwood City homes, window replacement runs $4,500-$15,000 depending on unit count, frame material (vinyl, fiberglass, or clad wood), and whether the Schluter membrane integration needs rebuild. Impact-rated window installation, required in some FEMA flood zones near Redwood Creek, ranges $8,000-$25,000. Door replacement with threshold membrane detail typically falls within the window range but can exceed it for oversized or multi-point locking units.
Our written quote itemizes: unit cost, membrane or profile replacement if needed, labor by the opening, permit fees if applicable, and disposal. Under Clause 1 of The Haven Standard, that number is fixed before work starts; no change proceeds without a signed change order. We warranty our installation for 365 days under the Done Right Promise, and the manufacturer’s glass seal warranty runs 20 years on most units we specify.
DIY or Call Us?

An owner can safely check: whether the weep holes are visible and clear, whether the Schluter profile is still adhered at the corners, and whether the hardware screws are seated. Use a flashlight, not a probe - the membrane is thin and punctures easily.
Where DIY goes wrong: removing a window or door unit integrated with Schluter membrane without understanding the waterproofing sequence. The membrane is lapped in a specific order (sill first, then jambs, then head); reverse it and water runs behind. We’ve rebuilt three Redwood City jobs in the past two years where the membrane was intact before the homeowner started and compromised after. The fix costs more than the original call would have. For membrane-integrated units, we recommend a trained technician. Call (650) 560-7228 and we’ll schedule a free estimate with a written price before any work begins.
FAQs
The window or door unit itself typically lasts 20-30 years; the Schluter membrane detail at the sill should be inspected at 10-15 years in our climate, sooner if the unit faces west or is within two miles of the bay. Salt air and UV exposure harden the KERDI collar material. Call (650) 560-7228 for an inspection and exact quote - estimates are free.
Hardware operators, balances, and weatherstrip can usually be repaired or replaced independently. The membrane integration cannot be patched effectively; once the lap sequence is broken, the proper fix is removal and rebuild. We evaluate this on site and note it in your written quote. Call (650) 560-7228 for a free estimate.
A single window or door unit, with membrane detail, is typically one day for removal and installation plus a half day for membrane cure and inspection. Multi-opening projects scale accordingly; we specify the schedule in writing before starting. Call (650) 560-7228 to schedule your free estimate.
We stock compatible weatherstrip, sill pans, and Schluter profiles (KERDI, SCHIENE, RONDEC) in common sizes. Window and door units themselves we order to your opening dimensions after measurement; lead time is typically 2-3 weeks for standard sizes, 4-6 for custom. Call (650) 560-7228 to confirm availability for your specific unit.
Written by Grant Rowan, Owner, Rowan Construction Group Redwood City at Rowan Construction Group Redwood City, serving Redwood City and nearby areas.







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