Verge flashing cost: how to compare fabrication and installation quotes?
Roof details
A price per metre of verge flashing is not enough to compare two roof-finishing proposals. Quotes may cover different sections, materials, element lengths and work scopes. For a meaningful comparison, set common assumptions and separate flashing supply from transport, access arrangements and installation. This guide explains what to request from the supplier and contractor and how to identify items that cannot yet be priced. It does not offer an average price without knowing the project. During refurbishment, support condition may require further investigation, and any replacement must meet the detail’s requirements. A useful offer has a clear scope matching the work that actually needs to be done.
In this article
Give every bidder the same basis
Include the agreed drawing, length schedule and roofing description in the enquiry. If one supplier receives only total metres and another a detailed drawing, their proposals may rest on entirely different assumptions.
Check the pricing unit
Check whether the price is per metre of finished flashing, per piece of a stated length or for material before bending. Record the unit beside each figure. Putting prices with different bases in one column does not make them comparable.
Distinguish roof-edge length from the quantity of ordered pieces. Joints and terminations can affect the material schedule. Their allowance must follow the agreed detail rather than being chosen only to produce a lower total.
Compare figures on the same net or gross basis. Do not transfer a tax rate from another quote without checking scope and billing basis. Retain the supplier’s stated figures and clearly identify the basis used for comparison.
Separate supply from labour
Ask whether fabrication includes every bend and agreed end component. Material of the same colour need not have the same coating or specification. Treat a product substitution as a separate option requiring a suitability check.
In the installation scope, identify who supplies fasteners and specified ancillary materials. Separate fitting new flashing from removing the old one. Without that distinction, it is harder to establish whether all required operations are included.
Identify site-dependent costs
Agree transport and unloading for the actual address and access conditions. Delivery to the property does not automatically include lifting pieces onto the roof. The offer should state where the agreed material-delivery service ends.
Access to the verge affects work organisation. Ask whether the contractor’s price includes necessary protection and equipment. Do not compare labour alone with an offer that also covers setting up the complete work area.
Agree how changes will be priced
Where the support needs inspection after removal, identify that uncertainty in the comparison. Agree how additional work will be documented and approved. Do not enter zero for a cost that has not yet been established.
Ask about quote validity, expected fabrication time and quantity-change conditions. For made-to-measure work, a change after production starts may require a separate agreement. Establish these conditions before choosing the supplier.
Compare scope before totals
Mark items that match between proposals and those that remain incomparable before judging totals. A lower figure may represent a saving, but it can also result from an omitted service or a different material.
After choosing, keep the final scope, drawings and installation arrangements together. Quote comparisons support the decision, but delivery and execution should be checked against what was actually agreed with the selected contractor.
7 branches. Materials closer to your project.
