Can we get samples before placing a bulk order?

Yes. Sample rolls ship by courier so your team can handle the product, check the print and run it on a test deck before you commit. Tell us which series and grammage you want to evaluate and we will arrange the shipment.

Can you print our own brand on the roll?

Yes — private-label printing is a standard part of the programme. Your logo, lap and nailing guides, contact line and safety wording can all be printed in line during production. Print plates and minimum quantities are confirmed per item.

What is the minimum order quantity?

Minimum order is one pallet (56 rolls), on any specification, for both factory-direct and US warehouse shipments. Send us your target roll spec — width, length, grammage and print — and we will confirm the MOQ for that item.

Do you supply test reports with each shipment?

Yes. Test reports are issued per order and travel with the shipping documents. If your market requires third-party testing or a specific standard, raise it at quotation stage so the test plan is agreed before production begins.

Can we audit the factory or send a third-party inspector?

Both are welcome by appointment. Let us know the scope — checklist, standard or customer requirement — and we will have the relevant batch records and production staff available on the day. Remote video walk-throughs can also be arranged.

Which markets do you export to?

We supply distributors, contractors and private-label partners across North America, Europe and Asia-Pacific, with selected lines held in US and EU warehouse stock. Contact the sales desk to confirm current availability for your destination.

Climate

Underlayment for High-Wind and Hurricane Regions

When shingles lift in a wind event, the underlayment becomes the roof. In high-wind regions that changes what matters: tear strength, fastener pull-through resistance and attachment density move from nice-to-have to decisive.

Failure mode

How roofs actually fail in wind

Wind damage rarely starts with the underlayment. It starts with shingle uplift at a corner or edge, which exposes the underlayment to direct wind pressure and driving rain. Once that happens, the underlayment is carrying the entire water-shedding function, usually for hours.

Propagation — a sheet that tears at a fastener exposes the deck, and wind gets under the tear and peels more.
Pull-through — cap nails driven by uplift pressure pull through a weak sheet even when the fastener itself holds in the deck.
Ingress — once the sheet is breached, water enters the attic and the damage is interior, not cosmetic.

This is exactly why fastener pull-through resistance is one of the tests that ASTM D8257 added and the felt standards never required.

Specify

What to put in the specification

Property	Why it matters in wind	What to ask for
Tear strength	A tear at a nail propagates across the sheet	Tested value with method and machine/cross direction
Fastener pull-through	Uplift pulls the sheet over the cap nail	D8257 pull-through result for the exact product code
Tensile strength	Resists elongation under pressure cycling	MD and CD values, not a single figure
Attachment density	More fasteners = less sheet movement per fastener	Follow the manufacturer's high-wind fastening schedule
Lap security	Laps are the first place wind gets under	Taped or self-adhered laps rather than reliance on overlap alone

Practice

Secondary water barrier practice

In hurricane-prone jurisdictions, a secondary water barrier is often required or strongly incentivised. The common approach is a self-adhered modified bitumen membrane at the joints in the roof deck — over the sheathing panel seams — so that even if the field underlayment and shingles are lost, the deck joints remain sealed.

For code or insurance programmes that require it, this is a separate line item from the field underlayment, and it is worth confirming the exact requirement with the local authority rather than assuming a generic hurricane spec.

Procurement note high-wind regions frequently require products backed by a current evaluation report. Ask for the report number and the expiry date — an expired report is a common reason a shipment is rejected at inspection.

FAQ

Common questions

Is a synthetic sheet always better than felt in high wind?

Generally the tear strength and pull-through resistance of a synthetic sheet are substantially higher than organic felt, which is why synthetics dominate in high-wind specifications. But the attachment schedule and lap treatment matter as much as the sheet — a good sheet fastened poorly will still fail.

What is a secondary water barrier?

A secondary water barrier is a self-adhered membrane applied over the roof deck panel joints (and often the entire deck) beneath the primary underlayment. If the primary layer and shingles are stripped away by wind, it keeps water out of the building at the seams where entry is most likely.

Should laps be taped in a wind zone?

Sealing laps — with manufacturer-approved tape or a self-adhered lap — is standard practice in high-wind regions. Unsealed laps are the most common path for wind-driven water to get beneath the sheet.

Need the spec sheet behind the claim?

Tell us the product, roll spec and destination. We will send the current data sheet, test reports and a quotation against your actual requirement.

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