uPVC
The commonest window frame in the UK and the material with the most confident wrong advice attached to it. The manufacturer permits a cream cleaner — sparingly, and not on woodgrain.
What not to do
Isopropyl alcohol is unsafe on uPVC
Unsafe
Do not do this. The risk is established, and it is described below.
Standing in for the solvent class the manufacturer prohibits. The guide names no individual solvent; it prohibits solvent-based cleaners twice, in capitals.
Evidence
Supported
Sources
PVC-U Window & Door Systems: Handling, Installation, Maintenance and Care Guide
The VEKA UK Group (VEKA and Halo profile systems), 2014 · Manufacturer documentation
Relied on for: That on no account should solvent based cleaners be used on PVC-U frames, stated again for the hardware alongside a prohibition on multi-purpose lubricants. (states this directly)
In detail
uPVC — unplasticised polyvinyl chloride, written PVC-U in the trade — is what most British window and door frames are made of, and consumer advice about it is unusually certain in both directions: never use a cream cleaner, or use a cream cleaner for everything. The profile manufacturer's own trade guide is narrower than either. Routine care is soapy water. Stains soapy water will not shift MAY be removable with a domestic NON-ABRASIVE cream cleaner — but not to excess, because that affects the gloss finish. The absolute prohibition is different and is printed in capitals twice: on no account should solvent-based cleaners be used. Two carve-outs matter and are missing from almost every consumer page. Decorative finishes — woodgrain foils in particular — are excluded from the cream-cleaner permission and referred back to the supplier. And the HARDWARE is a different surface entirely: handles, hinges, cylinders and restrictors carry coatings and polished finishes, are cleaned with a dry soft duster, and water is not to be used on them at all. The material itself is tougher than it is given credit for.
Properties
Sensitivity
- Acids
- Not addressed by the sources
- Alkalis
- Not addressed by the sources
- Heat
- Not addressed by the sources
- Abrasion
- Sensitive
- Porous
- Not applicable
“Not known” means nobody has established this, not that the material is unaffected.
What works
Mild cream cleanser is safe on, in specific conditions, uPVC
Safe only in specific conditions
This is only appropriate within specific limits. Outside those limits, no claim is made.
The single most contradicted instruction in consumer uPVC advice, and the manufacturer's own position is narrower than either camp.
Only within these limits:
- a domestic NON-ABRASIVE cream cleaner only
- for stains soapy water has already failed to remove — not as the routine method
- sparingly: excess affects the gloss finish
- not on decorative finishes such as woodgrain foils, which are referred to the supplier
The manufacturer permits this; it does not recommend it. Soapy water is the routine instruction and this is the escalation from it.
Precautions
- Test on an inconspicuous area first
- Check the manufacturer's instructions
Evidence
Supported
Sources
PVC-U Window & Door Systems: Handling, Installation, Maintenance and Care Guide
The VEKA UK Group (VEKA and Halo profile systems), 2014 · Manufacturer documentation
Relied on for: That stains not removable with soapy water may be removable using a domestic non-abrasive cream cleaner, that these should not be used to excess as they can affect the gloss finish, and that for decorative finishes such as woodgrain foils the supplier's advice should be sought. (states this directly)
Soap is safe on, in specific conditions, uPVC
Safe only in specific conditions
This is only appropriate within specific limits. Outside those limits, no claim is made.
Only within these limits:
- Soapy water, as often as the location requires — more in industrially polluted or coastal areas
- Gaskets cleaned periodically as well as the profile
- ON NO ACCOUNT solvent-based cleaners
- Woodgrain foil finishes: ask the supplier which products are suitable
Hardware is a different answer entirely: handles, hinges and cylinders carry coatings and are cleaned with a DRY soft duster with no water at all.
Precautions
- Check the manufacturer's instructions
Evidence
Supported
Sources
PVC-U Window & Door Systems: Handling, Installation, Maintenance and Care Guide
The VEKA UK Group (VEKA and Halo profile systems), 2014 · Manufacturer documentation
Relied on for: That routine care is occasional cleaning with soapy water covering the profile and the gaskets, that solvent-based cleaners must on no account be used, that woodgrain foils are referred to the supplier, and that hardware is cleaned with a dry soft duster and no water. (states this directly)
Mild cream cleanser is safe on, in specific conditions, uPVC
Safe only in specific conditions
This is only appropriate within specific limits. Outside those limits, no claim is made.
Only within these limits:
- Only for stains soapy water did not remove
- Domestic NON-ABRASIVE cream cleaner
- Not to excess — it can affect the gloss finish
- Not on woodgrain foil finishes
A permission with a cost attached and the cost stated, which is more useful than either a flat yes or a flat no.
Precautions
- Test on an inconspicuous area first
Evidence
Supported
Sources
PVC-U Window & Door Systems: Handling, Installation, Maintenance and Care Guide
The VEKA UK Group (VEKA and Halo profile systems), 2014 · Manufacturer documentation
Relied on for: That stains not removable with soapy water may be removable using a domestic non-abrasive cream cleaner, but that these should not be used to excess as they can affect the gloss finish. (states this directly)
Related
Hacks and claims involving this
- Cream cleaners ruin uPVC Disputed
- Nail polish remover to lift a stubborn mark Supported
Sources for this page
Sources
PVC-U Window & Door Systems: Handling, Installation, Maintenance and Care Guide
The VEKA UK Group (VEKA and Halo profile systems), 2014 · Manufacturer documentation
Relied on for: That routine cleaning is soapy water, that stains it will not remove may be removable with a domestic non-abrasive cream cleaner used sparingly because excess affects the gloss finish, that solvent-based cleaners must on no account be used, that woodgrain foils are referred to the supplier, and that tar and bitumen may stain white PVC-U. (states this directly)