PROJECT SHOWCASE

Concrete Tile Roof Repair & Underlayment Replacement

Tile Removal & Re-Installation • Structural Inspection • TileSeal HT Underlayment

Project Overview

Project Type
Residential Tile Roof Repair
Scope of Work
Full tile removal, underlayment replacement, rafter inspection & repair
Roof System
Concrete Tile with Westlake Royal TileSeal HT Underlayment

Before

The Problem — Aging Tiles & Deteriorated Underlayment

This residential concrete tile roof had suffered years of weathering and wear. While the tiles themselves appeared intact from the ground, a closer inspection revealed widespread deterioration beneath the surface — the underlayment had failed, battens were degraded, and the roof deck was vulnerable to moisture infiltration.

Conditions Found Before Work Began

  • Severely weathered concrete tile roof with cracked and displaced tiles along the edges and ridge
  • Completely deteriorated felt underlayment beneath the tiles, exposing the roof deck to moisture
  • Degraded and rotting wood battens that could no longer properly support tile alignment
  • Evidence of past water intrusion beneath the tile surface, including staining on the deck sheathing
  • Exposed and aged fiberglass insulation visible through gaps in the roof deck at the eaves
  • Compromised flashing details at the roof-to-wall transitions and gutter line

The extent of the underlayment failure required a complete tear-off and replacement — simply patching or overlaying a new layer would have trapped existing moisture and led to accelerated rot.

During

The Process — Professional Tear-Off & Underlayment Installation

The Tom Byer Roofing crew carefully removed every concrete tile, inspected each one for reusability, and stripped the failed underlayment down to bare deck. Damaged rafters and sheathing were repaired or replaced before installing a premium Westlake Royal TileSeal HT self-adhering underlayment system — one of the most advanced waterproofing solutions for tile roofing applications.

Work Performed

  • Careful removal and stacking of all reusable concrete roof tiles to prevent breakage
  • Complete tear-off of the failed felt underlayment down to the structural roof deck
  • Thorough inspection of all rafters, sheathing, and structural members for rot or damage
  • Repair and reinforcement of compromised rafter sections and replacement of damaged deck sheathing
  • Installation of Westlake Royal TileSeal HT — a premium self-adhering, high-temperature underlayment designed for tile roof systems
  • New pressure-treated wood battens installed over the underlayment to properly support tile coursing
  • Reinstallation of concrete roof tiles with proper spacing, alignment, and secure fastening
  • Job site maintained clean and safe throughout the project — all debris removed daily

After

The Result — A Fully Restored & Protected Roof System

The completed project delivers a fully restored concrete tile roof system with decades of reliable protection ahead. Beneath the reinstalled tiles sits a brand-new Westlake Royal TileSeal HT underlayment — providing a watertight, self-healing barrier that exceeds code requirements for secondary water resistance in tile roof applications.

Completed Work — Key Highlights

  • Westlake Royal TileSeal HT underlayment installed — premium self-adhering waterproof membrane designed specifically for tile roof applications
  • All concrete tiles inspected, cleaned, and professionally reinstalled with proper alignment and secure fastening
  • New pressure-treated battens throughout, ensuring proper drainage channels beneath the tile field
  • Structural repairs to rafters and sheathing provide a solid, long-lasting foundation
  • Clean, professional edge details at gutters, fascia, and roof-to-wall transitions
  • Full system designed to meet or exceed current California building code requirements
  • Roof life extended with the new underlayment system providing reliable protection for 25+ years

Why Westlake Royal TileSeal HT?

Westlake Royal TileSeal HT is a premium self-adhering roofing underlayment engineered specifically for high-temperature tile roof applications. Its rubberized asphalt formulation creates a watertight seal around every fastener penetration — the most common source of leaks in tile roofing systems. With superior resistance to heat, UV exposure, and moisture, TileSeal HT provides a secondary water barrier that outperforms traditional felt underlayment by a wide margin. For Southern California homeowners with concrete or clay tile roofs, it is the professional-grade choice for lasting protection.

Ready for a Roof That Lasts?

Tom Byer Roofing Service has been protecting commercial and residential properties across Southern California for decades. Whether you need a full roof replacement, tile repair, or a professional inspection, our licensed team delivers expert workmanship backed by industry-leading warranties.