Gutter Length Calculator
Instantly calculate the total linear metres of guttering needed for your home, including roof overhang and standard waste allowances.
Calculate Your Gutter Requirements
Enter your house dimensions and roof details below to get an instant, accurate estimate of the gutter length and number of sections you need to purchase.
Gutter Estimator
Enter your property details to see the material requirements
Length of the wall parallel to the main roof slope
Width of the gable end walls
Typical eaves overhang is 0.3m to 0.5m per side
Most homes only require front and back eaves
Standard 10% for cuts, joints, and end caps
UK standard uPVC sections are typically 4m
Material Requirements
Based on your property dimensions
Common Property Gutter Estimates
Estimated gutter lengths for typical UK property types, assuming a 0.3m overhang, front & back layout, and 10% waste allowance.
| Property Type | Typical Dimensions (L × W) | Base Eaves Length | Total to Buy (inc. 10% waste) |
|---|---|---|---|
| Small Terraced House | 8m × 6m | 17.2m | 19.0m (5 × 4m sections) |
| Standard Semi-Detached | 10m × 8m | 21.2m | 23.5m (6 × 4m sections) |
| Large Detached House | 14m × 10m | 29.2m | 32.5m (9 × 4m sections) |
| Bungalow (All 4 sides) | 12m × 10m | 46.8m | 51.5m (13 × 4m sections) |
Guttering Installation FAQ
Everything you need to know about measuring, buying, and installing rainwater drainage systems.
Measure the length of the eaves where gutters will be installed. Add the length of the roof overhang on both ends. Multiply by the number of sides (e.g., front and back), then add 10% for waste, cuts, and overlaps.
It is standard practice to add a 10% to 15% waste allowance to your total gutter length calculation. This accounts for cutting errors, overlaps at running joints, and the space taken up by stop ends.
In the UK, standard uPVC and aluminium gutter sections are typically sold in 4-metre lengths. Some suppliers also offer 2-metre or 3-metre lengths, which are useful for smaller or more intricate rooflines.
Not necessarily. Most homes only require gutters on the front and back eaves where the roof slopes down. Side elevations (gable ends) often do not need gutters unless the roof design specifically directs water that way.