Skip to content
Westlake Royal TileSeal HT Self-Adhered High-Temp Roof Underlayment, 2 Square Roll
Regular price $144.43Orders start at $399 — combine any items to reach the minimum. Learn more
Westlake Royal TileSeal HT Self-Adhered High-Temp Roof Underlayment, 2 Square Roll
TileSeal HT is Westlake Royal's premium self-adhered, high-temperature roof underlayment designed for tile and metal roofing. Each roll covers 2 squares and is available in White or Gray. The modified asphalt core self-seals around mechanical fasteners and pairs with tile, metal, and other roofing finishes.
Key Features:
- Self-Adhered Membrane: Premium self-adhered underlayment installs quickly without mechanical fastening across the field.
- High-Temperature Rated: Engineered as a high-temp underlayment for tile and metal roof systems where heat resistance matters.
- Self-Sealing Core: The modified asphalt core seals around nail penetrations and mechanical fasteners.
- Slip-Resistant Surface: High-strength non-woven polyester top surface provides an extremely strong, slip-resistant walking surface.
- Foam-Adhesive Friendly: Ideal surface for foam fastening roof tiles to the underlayment.
- Universal Compatibility: Suitable under all roofing materials, including metal.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Westlake Royal |
| Sell unit | 1 roll, 2 squares |
| Product line | TileSeal HT |
| Available colors | White, Gray |
| Available sizes | 2 square per roll |
| Material | Modified asphalt core with non-woven polyester surface |
| Type | Self-adhered high-temperature underlayment |
| Coverage per unit | 2 squares per roll |
| Intended use | Underlayment for tile and metal roofs |
| Category | Ice & Water / Premium Underlayment |
Coverage & How Much You Need:
One roll covers 2 roofing squares (200 sq ft) at standard application. Divide total roof area in squares by 2 and allow extra for laps at eaves, valleys, and end seams to size the job.
Fit and Compatibility:
Designed for use under Westlake Royal tile and metal roofing as well as all other roofing materials, including metal. Suitable for foam-fastened tile installations.
Frequently Asked Questions (FAQ):
Q: What is included with an order?
A: Each order is one roll of TileSeal HT underlayment covering 2 squares, in your choice of White or Gray.
Q: How many rolls do I need?
A: One roll covers 2 squares; divide your roof area in squares by 2 and add for laps and waste.
Q: Is it safe under metal roofing?
A: Yes, it is a high-temp formulation suitable under all roofing materials, including metal.
Q: Does it seal around nails?
A: Yes, the modified asphalt core self-seals around mechanical fasteners and nail penetrations.
Q: Can tiles be foam-attached to it?
A: Yes, the slip-resistant polyester surface is ideal for foam fastening roof tiles.
Q: Is it difficult to install?
A: No, it is self-adhered for fast, easy installation.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
For tile and metal roofs, a high-temp self-adhered membrane like TileSeal HT is the preferred underlayment because standard asphaltic papers can bleed or slip under sustained heat. Its fastener-sealing core adds secondary water protection at nail penetrations. Plan laps per the manufacturer's installation instructions and prime questionable substrates before adhesion.
Self-adhered membranes are slippery, especially with dust or moisture; wear proper roof-walk footwear and follow fall-protection requirements during installation.
Order Westlake Royal TileSeal HT underlayment for a premium high-temp membrane under your tile or metal roof.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
