Cedar Shake to Asphalt Reroof in Coquitlam

Cedar shake to asphalt conversion (full reroof) · Completed Fall 2026 · Coquitlam, BC

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New Malarkey asphalt shingle roof on a Coquitlam home after cedar shake conversion

The Project

A moss-covered cedar shake roof on a hillside Coquitlam home, surrounded by tall conifers, converted to a complete Malarkey asphalt roofing system. We stripped the cedar, replaced rotten skip strapping, sheathed the whole roof in new plywood, installed Malarkey synthetic underlayment, then Malarkey architectural shingles with matching Malarkey hip and ridge caps.

Materials

  • Malarkey architectural shingles
  • Malarkey Secure Start PLUS synthetic underlayment
  • Malarkey hip & ridge caps
  • Plywood roof sheathing
  • Ice-and-water protection membrane
  • Pre-finished metal valley flashing
  • New roof vents and pipe flashings
Read the full write-up

From Cedar to New Roof: Step by Step

1

Before

Moss-covered cedar shake roof on a Coquitlam home before cedar shake to asphalt conversionBefore
Before: worn cedar shakes with heavy moss on the street-facing slopes
Split and missing cedar shakes and thick moss along a valley before reroofing in CoquitlamBefore
Before: split and missing shakes, moss and debris along the valley and hip
Rear cedar shake roof covered in moss and needles before replacement in CoquitlamBefore
Before: the back slopes under the trees were the worst, with moss holding water against the wood
Split and loose moss-covered cedar shakes around the chimney of a Coquitlam home at the start of tear-offBefore
Before: around the chimney the cedar was split, loose and covered in moss, with debris collecting on the slope
2

Work in Progress

Cedar removed, new plywood sheathing over skip strapping and Malarkey underlayment during a Coquitlam reroofWork in Progress
In progress: cedar stripped, rotten strapping replaced, new plywood going on, Malarkey Secure Start PLUS underlayment ready. Crew tied off in harnesses.
New plywood sheathing installed beside the chimney during a cedar shake to asphalt reroof in CoquitlamWork in Progress
In progress: new plywood sheathing going on beside the chimney while the last of the old cedar comes off the lower roof
Malarkey Secure Start PLUS synthetic underlayment across several slopes of a Coquitlam reroof with the crew tied offWork in Progress
In progress: Malarkey Secure Start PLUS synthetic underlayment rolled out across the slopes, with the crew tied off on the ridge
3

After

New Malarkey asphalt shingle roof on a Coquitlam home after cedar shake conversionAfter
After: the same street-facing slopes in Malarkey architectural shingles with new vents
Open metal valley and Malarkey hip and ridge caps on a new asphalt roof in CoquitlamAfter
After: open metal valley and Malarkey hip and ridge caps
Finished Malarkey shingle roof with metal valley and roof vent on the rear of a Coquitlam homeAfter
After: the rear slopes finished, with a new pipe flashing and roof vent
Finished Malarkey architectural shingle roof with hip and ridge caps, roof vents and an open metal valley in CoquitlamAfter
After: the finished slopes with Malarkey hip and ridge caps, new roof vents and an open metal valley
Top-down view of new hip caps, a roof vent and a metal valley on a Coquitlam asphalt shingle roofAfter
After: looking down a finished hip, where the caps meet over a new roof vent and the metal valley

Drag to Compare

New Malarkey asphalt shingle roof on a Coquitlam home after cedar shake conversionMoss-covered cedar shake roof on a Coquitlam home before cedar shake to asphalt conversion
Before
After
CoquitlamDrag to compare
Open metal valley and Malarkey hip and ridge caps on a new asphalt roof in CoquitlamSplit and missing cedar shakes and thick moss along a valley before reroofing in Coquitlam
Before
After
CoquitlamDrag to compare
Finished Malarkey shingle roof with metal valley and roof vent on the rear of a Coquitlam homeRear cedar shake roof covered in moss and needles before replacement in Coquitlam
Before
After
CoquitlamDrag to compare

Scope of Work

  • Stripped and disposed of all cedar shakes and ridge caps
  • Replaced rotten skip strapping found under the cedar
  • New plywood sheathing over the entire roof for a solid, nailable deck
  • Self-adhered ice-and-water protection in vulnerable areas
  • Malarkey synthetic underlayment across the roof
  • Malarkey architectural asphalt shingles
  • Malarkey hip and ridge caps (low and high profile where needed)
  • Pre-finished open metal valleys
  • New roof vents and pipe flashings
  • Crew worked in fall-protection harnesses throughout
Cedar shake to asphalt conversionRoof replacement in Coquitlam

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