Planning gravel grid driveways
Gravel grids confine the surface aggregate. Their loading capacity depends on the grid, bedding, foundation and specified fill working together.
Use the supplier’s actual grid coverage and infill depth; boundary cuts can increase the ordering quantity.
Measuring the work for this calculator
Length multiplied by width gives the driveway area. Unit dimensions, joint width and the ordering allowance provide a separate indicative unit count. Mixed packs, irregular reclaimed units and product-specific grid coverage should be ordered against the supplier’s coverage schedule.
What the gravel grid driveways estimate covers
The selected surface guide is multiplied by the measured area. It is an early installation allowance, not a named-product quotation. Ordinary preparation must not be added twice. Existing-surface breakout, abnormal ground, engineered drainage, boundaries and highway work need their own agreed scope where excluded.
The first guide option is stabilised gravel-grid installation. Its allowance is £55–£90 for the relevant unit shown in the result. This is a published-guide starting point; it is not a price offered by a contractor on this website.
Choose the specification and separate allowances
This page models stabilised gravel-grid installation. A different construction or repair method needs a separate allowance rather than an assumption that every job has the same scope.
The project controls include:
- Specified layer depth (mm).
- Unit length (mm).
- Unit width (mm).
- Joint width (mm).
- Ordering / cutting allowance (%).
Reading the budget breakdown
The results show the measured quantity, the selected work allowance and any separately selected items. A volume, unit count or coverage result is a quantity check, not a construction design. Where the model uses a minimum visit allowance or whole bags, the displayed total will not fall in direct proportion to a very small area.
Use the optional contingency to make a separate budget provision. Add a quoted fixed allowance only for work outside the model’s stated scope. Check the VAT basis before selecting the VAT adjustment.
Compare quotations for gravel grid driveways
Give contractors the same measurements and work description. Ask them to identify the main work, preparation, disposal, access requirements, drainage and any making-good that applies to this project. An apparent saving can simply mean that a different part of the scope has been priced.
Use the supplier’s actual grid coverage and infill depth; boundary cuts can increase the ordering quantity. Keep the agreed specification with the quote, including any exclusions and the way changes discovered during the work will be authorised.