Weathered double-hung window with worn sash and frame details

Guide category

Problems And Maintenance Guides

Browse homeowner window replacement guidance about problems and maintenance.

Available guides

Guide

Why Windows Become Drafty

The sensation of a draft can come from more than one path, so locate it before choosing repair or replacement.

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Guide

Why Insulated Windows Become Foggy

Persistent haze inside a sealed glass space is different from moisture that can be wiped from an exposed surface.

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Guide

Why Water Leaks Around Windows

Water appearing at a window can travel from another location, so document the pattern before sealing or replacing anything.

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Guide

What Causes a Window Sash to Stop Staying Open

A dropping sash is an operation problem that can involve balance hardware, binding, alignment, or frame condition.

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Guide

Window-Frame Rot and Moisture Damage

Damaged material is only half the problem; the water source and repair boundary must be defined too.

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Guide

Maintaining Replacement Windows by Frame Material

Material changes some care questions, but every window needs safe cleaning, clear drainage, working hardware, and documented service.

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