Weatherstrip guides by topic

Choose a topic below to investigate a seal, draft or installation question. These guides help identify what to check; a similar shape or brand name alone does not prove an exact replacement fit.

New here? Start with profile identification or measurement basics.

Andersen systems

• Andersen 100 Series: identify three sash seal styles
• Andersen 100 vs A-Series: identify casement seal locations
• Andersen 200 glider: check-rail bulb vs interlock
• Andersen 400 awning: which seal surrounds the sash?
• Andersen 400 glider: head/sill plugs or sash seal?
• Andersen 400: one-piece vs four-piece sash weatherstrip
• Andersen 400 casement: waterbar or sash bulb?
• Andersen A-Series glider: which panel has interlock?
• Andersen Frenchwood: jamb vs interlock weatherstrip
• Cold gliding window: convection or outside-air leak?
• Andersen Narroline vs Perma-Shield: door handing
• Andersen part 2641414: locate stationary side-jamb
• Andersen Perma-Shield 1971–1992: meeting-stile seal
• Andersen storm door: measure edge seal to sweep lip
• Andersen storm door: identify slide-in sweep fin track

Diagnose drafts and compression

• Door springs back: gasket too thick or hinge?
• Double-hung meeting rail: seal wear or lock?
• Draft at window trim or sash gasket?
• Musty sill after replacing gasket: what next?
• Smoke pencil draft check: what results mean

Garage-door seals

• Garage threshold adhesive: prep and cure checks
• Wayne Dalton 530: bottom gasket or panel joint?

Historic steel windows

• Historic steel: isolate brass/bronze weatherstrip?
• Historic steel casement: clip-in seal channel
• Historic steel sash: measure hinge-side gap
• Historic steel window: rust distortion or bad gasket?
• Historic steel: fix alignment before new gasket?

Historic wood windows

• Historic sash: install strip before or after painting?
• Historic wood sash: missing zinc interlock clues
• Historic wood window: sill drainage vs air seal
• Historic sash: where spring bronze belongs
• Historic wood sash: spring-metal vs rolled-zinc interfaces
• Weatherstrip historic wood sash without sealing it shut
• Historic wood window: cold glass or air leak?

Identification and part lookup

• Serial number vs seal shape: which identifies fit?

Marvin systems

• Marvin casement: caulk joint vs sash weatherstrip
• Marvin Essential Bulletin 830: ordering-code changes
• Marvin Essential casement: frame vs sash seals
• Marvin gasket cleaning: solvent restrictions

Materials and care

• EPDM vs vinyl: what a gasket datasheet proves
• Gasket conductivity vs whole-door heat loss
• Silicone vs TPE: compare recovery and temperature
• Store spare rubber weatherstrip without distortion
• Weatherstrip care: detergent or solvent?
• Durometer vs compression-force gasket fit

NGP product references

• NGP 222NA-36: what the product code specifies
• NGP automatic door bottom: push-side mounting

Rated and egress doors

• Acoustic gasket vs smoke-control gasket
• Commercial egress door: seals vs reliable latching
• Fire door clearance: why thicker seal isn't fix
• Automatic bottom on fire door: listing checklist
• Rated pair: meeting stile gasket vs astragal
• Smoke-control door gasket vs regular weatherstrip
• UL 10B vs 10C: read gasketing listing limits

Schlegel references

• Schlegel Q-LON: read EN 12365 classification
• Schlegel Q-LON aluminium: measure profile group

Therma-Tru systems

• Therma-Tru adjustable sill gasket vs bottom sweep
• Therma-Tru corner pad or jamb weatherstrip?
• Therma-Tru fixed sill: vinyl insert or jamb seal?
• Therma-Tru inswing pair: astragal-to-sill seal
• Therma-Tru lock jamb: compression or alignment?
• Therma-Tru paired doors: astragal meeting-stile seal
• Therma-Tru rain deflector or perimeter weatherstrip?
• Therma-Tru: water at sill-to-jamb corner
• Therma-Tru torn sweep or damaged sill saddle?
• Therma-Tru: leak beneath sill or past door sweep?