A fast-skinning hybrid roofing sealant and adhesive for lead flashing, guttering, soffits and more. Solvent-free, low odour, UV resistant and flexible. Works on damp surfaces and bonds to most common roofing materials.
Available options and pricing for Bond It LEAD PRO Hybrid Roofing & Flashing Sealant, with quantity selectors and a running total
QTY
SKU
Price
QTY
Total
12
BDLPROGY-12
£33.48£40.18
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1
LEADMATE-SINGLE-1
£2.99£3.59
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Bond It Lead Pro is a hybrid lead flashing sealant built for the full range of roofing work — not just tidy repairs in dry weather, but the sort of awkward, damp, mid-job fixes that roofers actually deal with day to day. The hybrid polymer formula gives you a fast-skinning sealant that stays flexible after curing, handles movement without cracking, and holds up against UV exposure, ozone and heat over the long term.
It bonds to lead, aluminium, copper, uPVC, steel, timber, slate, tiles, industrial roofing panels, GRP, acrylic and glass. It will also bond to bitumen surfaces, though a primer is needed there first. That covers the vast majority of materials you’ll encounter across domestic and commercial roofing, which makes it a sensible one-tube solution rather than a shelf full of different products for different substrates.
Where Bond It Lead Pro Gets Used on Site
On a typical pitched roof job, this gets used to seal flashing joints, reduce tile lift, and quiet down any areas prone to wind noise. For flat roofing, it works well around roof lights, mechanical fixings and cladding overlaps. It’s equally at home sealing sub-roof ducting and penetrations from the inside, which is useful when external access is limited or weather isn’t cooperating.
The sealant is also suitable for solar panel installations — specifically for sealing around mounting fixings and flashings on solar energy systems, where long-term weatherproofing around dissimilar materials matters.
Low Odour, Solvent-Free Formula
The EC1+ certified, very low emissions formula makes it more practical for occupied or poorly ventilated spaces than traditional solvent-based products. Internal use on ducting and roof voids is far more comfortable for the person doing the work. It’s paintable once cured, so cosmetic finishing isn’t an issue on visible areas.
This hybrid lead flashing sealant is supplied in a standard cartridge format and applies easily with a skeleton or barrel gun. Non-shrinking, flexible after cure, and CE approved — it does what it says, without drama.
Pro Tip: When applying to bitumen surfaces, always use an appropriate primer first and allow it to fully dry before gunning the sealant, otherwise adhesion will be significantly reduced regardless of how well you prep the joint.
Bond It Lead Pro is used by roofers working on both pitched and flat roofs across domestic, commercial and industrial sites. Common applications include sealing lead, aluminium and uPVC flashings, pointing valleys and verges, sealing around roof lights and mechanical fasteners, and bonding cladding overlaps. It is also used internally for sub-roof ducting and around penetrations where a weatherproof, flexible seal is needed. Solar installation teams use it around panel mounting fixings and associated flashings.
Best For
Lead and aluminium flashing joints
Roof light and skylight sealing
Tile lift and noise reduction
Guttering and soffit sealing
Solar panel mounting fixings
Sub-roof ducting (internal use)
Cladding and industrial roofing panels
Compatible Surfaces
Lead
Aluminium
Copper
uPVC
Steel
Timber
Slate and tiles
GRP and acrylic
Glass
Bitumen (primed first)
Key Properties
Hybrid polymer technology
Solvent-free and low odour
Fast skinning, quick curing
UV, heat and ozone resistant
Bonds to damp surfaces
Non-shrinking and flexible after cure
Paintable
EC1+ certified, very low emissions
CE approved
Not suitable for: Not suitable for use on bitumen surfaces without priming first. Not intended as a structural adhesive where significant load-bearing is required.
Apply using a standard skeleton or barrel gun. Cut the nozzle to the required bead size and ensure the surface is clean and free from dust, loose material or grease. The product will adhere to damp surfaces, but standing water or frost should be removed before application.
Apply a continuous bead to the joint or overlap and press firmly into position. Tool the sealant if a neat finish is required. Fast skinning means working time is limited in warm conditions, so do not apply more than you can bed down quickly. Allow to cure fully before painting if a decorative finish is needed.
Remove any loose debris, old sealant, moss or grease from the surface before starting
On bitumen substrates, apply a compatible primer and allow it to dry completely before proceeding
Load the cartridge into a skeleton or barrel gun and cut the nozzle to the bead size required
Apply a continuous, even bead along the joint, flashing edge or fixing area
Press the substrate firmly into place or tool the sealant bead to achieve full contact
Smooth the sealant with a wetted spatula or finger if a neat finish is needed
Allow to skin and cure before exposing to heavy rain or applying paint
Can Bond It Lead Pro be applied in wet conditions or to damp surfaces?
Yes, it is formulated to bond to damp surfaces, which makes it useful for site conditions that aren't always ideal. That said, standing water or frost on the joint should be cleared away before application. Damp is fine; submerged is not.
Is this sealant suitable for use inside a roof space or in poorly ventilated areas?
Yes. The solvent-free, low odour formula carries EC1+ certification for very low emissions, making it suitable for internal applications such as sub-roof ducting and roof void penetrations where ventilation may be limited.
Bond It Lead Pro uses a hybrid polymer chemistry that combines the flexibility of silicone with the paintability and adhesion of polyurethane-based systems, without the solvents associated with older roofing mastics. It carries EC1+ certification for very low VOC emissions and is CE approved. The cured sealant remains flexible, resisting cracking under thermal movement, UV exposure, ozone and heat cycling over time.
Product Type
Hybrid polymer roofing sealant and adhesive
Format
Cartridge
Solvent-Free
Yes
Odour
Low
Certification
EC1+ (very low emissions), CE approved
UV Resistance
Yes
Heat Resistance
Yes
Ozone Resistance
Yes
Paintable
Yes
Application to Damp Surfaces
Yes
Internal Use
Yes
External Use
Yes
SKU
BDLPROGY
Box Quantity
1, 12
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