UPVC Windows

UPVC Windows

UPVC windows from Costello Windows are perfect for new build homes, replacement work, extensions and commercial projects. Our UPVC window comes in double and triple glaze. There is a range of woodgrain effect colours that can be applied. Dual Colour is common, for example a light cream inside with an anthracite grey outside.

Costello Windows

Woodgrain Colour Range

The UPVC window has 14 woodgrain effect colours to choose from. These include 4 modern greys and our unique Balmoral colour. Grey’s and cream are such good colours to complement with other colours. Typically our customers choose a light cream or white as an inside colour.

Trogan Heavy Duty Hinge

Maximum weight load 40kg
True 90º egress opening
Easy Clean Function
Suitable for all side hung applications
One hinge covers all frame widths up to 900mm

UPVC Window Features

Triple Glaze U-Value 0.9 W/m²K

Double Glaze U-Value 1.2 W/m²K

uPVC A1 Rated

Independently certified to BS 6375-1

Argon gas filled units – Warm edged spacer bars

Double or triple glazed with a 70 mm frame

Co extruded seals to avoid gasket shrinkage and heat loss

Internally Glazed, glass cannot be removed from outside

Anti-draft mechanism between hinges for insulation

Thermal Insulation
U-Values 0.76 W/(m²K) to U-Values 1.1 W/(m²K)

Thermal Insulation
Double & Triple Glaze

Air Permeability
Class 4 600 PA

Technical Details

Class A4 E900 900 Pa

Wind Resistance
Class A4 P3 2400

28 mm to 44 mm units with 4 mm window pane thickness

Window Colour Options

Anthracite Grey
Silver Grey
Agate Grey
Basalt Grey
Light Cream
Chartwell Green
Golden Oak
Dark Green

Handle Colour Options

Please Note

  • Image colour may vary slightly to end product
  • Standard Interior colours are white and light cream
  • All colours have a woodgrain effect except white