Wood Preservers for Windows

Our wide range of interior and exterior wood preservers are ideal for providing protection to wooden window frames and sills prior to applying a wood oil or wood stain. Protect your window sills against woodworm, dry rot, wet rot and fungal decay with one of these top quality wood preservatives.

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Displaying 15 products

  4.9/5.0  (2896)
A solvent-based preservative that offers microporous protection against wood rot, fungi, decay and mould. Available in 7 colours or clear.
  • 2-3 coats
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 1L, 5L
  4.9/5.0  (1146)
A UV-resistant, deep penetrating, low odour protective treatment for all exterior wood that is harmless to beneficial insects and plants when dry.
  • 2-3 coats
  • 6m² per litre
  • 48 hrs drying time
More info
Available in 1L, 2.5L, 5L
  4.9/5.0  (301)
A complete wood preservative treatment that protects exterior wood from wood rot, decay and woodworm.
  • 3 coats
  • 8m² per litre
  • 24 hrs drying time
More info
Available in 5L
  4.8/5.0  (147)
A clear, exterior wood preserver that protects against mildew, rot, blue stain and wood boring insects whilst reducing wood swelling and shrinkage
  • 1 coat
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 750ml, 2.5L
  4.9/5.0  (146)
A low-odour wood treatment without wax that offers microporous protection against wood rot, fungi, decay and mould.
  • 2-3 coats
  • 6m² per litre
  • 12 hrs drying time
More info
Available in 1L, 5L
  5.0/5.0  (142)
An oil and wax based biocide-free wood preservative for interior and exterior use and ideal for high moisture environments.
  • 1 coat
  • 8m² per litre
  • 24 hrs drying time
More info
Available in 125ml, 750ml, 2.5L
  4.8/5.0  (72)
An exterior water-based wood preservative for rough and smooth garden timbers available in 5 shades.
  • 2-3 coats
  • 5m² per litre
  • 4 hrs drying time
More info
Available in 5L
  5.0/5.0  (67)
Quickly eliminate and protect against woodworm and woodboring insects.
  • 2 coats
  • 5m² per litre
  • 48 hrs drying time
More info
Available in 1L, 2.5L, 5L
  4.7/5.0  (16)
A clear, water-based wood preservative treatment for interior and exterior timber. Prevents insect attack, rot and decay.
  • 2 coats
  • 5m² per litre
  • 16 hrs drying time
More info
Available in 1L, 5L
  4.9/5.0  (25)
Combat wood rotting funghi and insects with this high-quality wax-free preserver.
  • 2 coats
  • 10m² per litre
  • 24 hrs drying time
More info
Available in 2.5L
  4.9/5.0  (12)
A fast and effective woodworm killer for interior and exterior timber
  • 2 coats
  • 5m² per litre
  • 48 hrs drying time
More info
Available in 500ml
  5.0/5.0  (7)
An interior-use only, clear, water-based, all-purpose treatment to prevent insect attack, re-infestation and fungal decay.
  • 2-3 coats
  • 3.5m² per litre
  • 48 hrs drying time
More info
Available in 1L, 2.5L, 5L
  4.9/5.0  (8)
An effective water-based clear wood preservative that provides protection against wet rot, dry rot, wood worm and insect attack.
  • 3 coats
  • 6m² per litre
  • 24 hrs drying time
More info
Available in 2.5L, 5L
  5.0/5.0  (7)
Penetrates deep into the wood to kill wood boring insects, their larvae and eggs.
  • 3 coats
  • 10m² per litre
  • 2 hrs drying time
More info
Available in 1L, 5L
  5.0/5.0  (1)
Effective formula that prevents re-infestation and ensures effective protection for years to come.
  • 2-3 coats
  • 3.5m² per litre
  • 48 hrs drying time
More info
Available in 1L, 5L