Can wood glue bond painted or varnished wood?

Not reliably. PVA needs to wet bare wood fibers, while a finished surface makes the glue depend on the paint or varnish staying attached. Remove the coating inside the joint before gluing.

Why is an end-grain glue joint weak?

Open end grain pulls liquid glue away from the bond line like a bundle of straws. Brush on a light sizing coat first, let the fibers absorb it, then apply the bonding coat and clamp the fitted joint.

Why did wood glue leave a pale patch under stain?

Dried glue sealed the pores, so the stain could not enter the wood evenly. Remove squeeze-out before finishing; once stain reveals the patch, sanding back to clean fibers is the dependable repair.

Is every wood glue suitable outdoors?

No. Some PVA formulas are intended only for dry interior work, while others are rated for weather exposure. Read the individual product label and still avoid uses the maker excludes, such as continuous immersion.

Tous les types de colle

Type de colle

Colle à bois (PVA)

La colle de référence pour le bois sur bois. Un assemblage PVA durci est plus résistant que le bois lui-même.

Idéal pour

Ce que Colle à bois (PVA) colle le mieux

Convient aussi, selon les conditions

N’adhère pas sur

Métal, Plastique, Verre, Céramique, Tissu et textile, Caoutchouc, Béton et pierre, Cuir, Aluminium, Polypropylène (PP), Polyéthylène (PE / PEHD / PEBD), Plaque de plâtre (Placo)

Mauvais outil

Les matériaux non poreux comme le métal, le verre ou le plastique — elle a besoin de s’imbiber pour agir.

Utilisation

Comment utiliser Colle à bois (PVA)

01Une fine couche sur les deux faces vaut mieux qu’une couche épaisse sur une seule.
02Serrez fermement — la colle PVA nécessite une pression de contact pendant le séchage.
03Essuyez les bavures avec un chiffon humide avant qu’une pellicule ne se forme.
04Les assemblages doivent être bien ajustés ; la colle vinylique ne comble pas les jeux.

Paires de matériaux

Paires pour lesquelles Colle à bois (PVA) est le meilleur choix

Bois

Guides

Réparations qui utilisent Colle à bois (PVA)

Articles

Comment Colle à bois (PVA) fonctionne

Questions

Questions fréquentes sur Colle à bois (PVA)

Can wood glue bond painted or varnished wood?: Not reliably. PVA needs to wet bare wood fibers, while a finished surface makes the glue depend on the paint or varnish staying attached. Remove the coating inside the joint before gluing.
Why is an end-grain glue joint weak?: Open end grain pulls liquid glue away from the bond line like a bundle of straws. Brush on a light sizing coat first, let the fibers absorb it, then apply the bonding coat and clamp the fitted joint.
Why did wood glue leave a pale patch under stain?: Dried glue sealed the pores, so the stain could not enter the wood evenly. Remove squeeze-out before finishing; once stain reveals the patch, sanding back to clean fibers is the dependable repair.
Is every wood glue suitable outdoors?: No. Some PVA formulas are intended only for dry interior work, while others are rated for weather exposure. Read the individual product label and still avoid uses the maker excludes, such as continuous immersion.