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The Ultimate Guide to Flashing
What Flashing Do I Need?
Choosing the right pipe flashing is all about your roof type, pipe angle, and installation needs. Below you’ll find the most common scenarios and the best Master Flash product to suit each one.
Best Flashing for Metal Roofs
The Master Flash Standard is made from flexible EPDM or high-temperature silicone with an aluminium base, designed to handle temperature changes and allow for pipe movement.
It’s easy to cut and shape on site, making it suitable for almost any pipe size, and is ideal for general-purpose installations on corrugated or standing seam metal roofs.
Best Flashing for Tiled Roofs
The Master Flash Vertical Tile Flash features a large, formable aluminum base that adapts to uneven tile surfaces, paired with fire-retardant EPDM for added safety.
It’s designed specifically for clay, slate, or concrete tiled roofs, providing a reliable, long-lasting weatherproof seal.
Best Flashing for Flat Roofs
The Master Flash Low-Profile has a discreet, closed-top design that makes it perfect for sealing small pipe penetrations, sidewalls, or repair work.
It performs well on flat felt, bitumen, or asphalt surfaces, offering a neat, low-profile finish that blends seamlessly into the roof.
Best Flashing for Steep Roofs
The Master Flash Extreme Angle comes with a built-in 40° pitch, making it specifically designed for metal roofs with slopes between 35° and 65°.
Its flexible material accommodates pipe movement, providing a secure seal where standard flashings can’t sit properly on steep roofs.
Best Flashing for Existing Roof Repairs
The Master Flash Retrofit features a pre-split design that wraps neatly around existing pipes, making it ideal for replacing damaged flashings without the need to dismantle the pipe.
Supplied with fasteners for quick and easy installation, it’s the perfect choice for upgrades or repair work on older roofs.
Best Flashing for Residential Roofs
The Master Flash Residential is a versatile option that works across asphalt shingles, tiles, metal, and flat roofs.
It’s designed to seal around plumbing vents, HVAC pipes, and chimneys, making it the go-to flashing solution for homeowners needing a reliable all-rounder.
Best Flashing for Residential Pitched Roofs
The Master Flash Residential Lead combines a durable EPDM sleeve with a lead base featuring a built-in 20° pitch.
Offering excellent corrosion resistance and long-term reliability, it’s a premium choice for pitched residential roofs where longevity is especially important.
Best Flashing for Solar Panel Installations
The Solar Multi Port range is designed for modern solar setups, allowing multiple penetrations to be sealed through a single flashing. Whether you’re running cabling or several small pipes, these flashings simplify installation and reduce the risk of leaks. Available with different base options, including aluminum, lead, or retrofit designs, they offer flexibility to match the roof type.
Choose these if you’re installing solar panels and need a neat, reliable way to handle multiple penetrations.
Best Flashing for Mixed or Dual-Purpose Use
The Multi Flash is a versatile option that can be used for both new installations and retrofit jobs. Made from durable EPDM or high-temperature silicone, it adapts easily to different roof types and applications.
A smart choice if you want one flashing that covers both standard installations and replacements, saving time and simplifying inventory.
Best Flashing for Medium Pipe Sizes
The Middy is sized specifically for medium-diameter pipes, bridging the gap between small penetrations and large-scale flashings. It’s quick to install and built with the same durable materials as the rest of the Master Flash range, ensuring long-lasting performance.
Ideal if your project falls into that mid-size range where a standard or mini flashing isn’t quite right.
Best Flashing for Quick Fixes and Odd Shapes
Fix-a-Flash is designed as a problem-solver for awkward or unusual penetrations that standard flashings can’t easily accommodate. Its flexible design makes it perfect for repairs, irregular shapes, or unique situations where you need a reliable seal in a hurry.
Great for contractors and homeowners who need a go-to flashing for quick fixes or non-standard jobs.
Final Word
The right flashing depends on your roof type, pipe angle, and whether you’re installing new or repairing old.
The Master Flash range has a specialist solution for every situation – from steep metal roofs to tiled or solar installations.
