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How to Repair Waterproof Jackets
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How to Reproof a Tent
Introduction
Most modern tent flysheets are made with a Polyurethane (PU) coating to make the fabric waterproof while a Durable Water Repellent (DWR) finish on the face fabric encourages water to bead and roll off.
Things like abrasion, exposure to UV, wind and rain will cause this DWR finish to deteriorate eventually and the flysheet fabric will begin to retain moisture.
Once the flysheet becomes saturated it reduces the breathability of the tent causing moisture to build up on the inside of the flysheet and the inner tent. The moisture from the flysheet will transfer to the inner tent when the two come into contact through capillary action.
By reproofing your tent you are replenishing the Durable Water Repellent finish on the flysheet so that water can bead and roll-off again.
What you need to reproof a tent
Reproofing agent such as Grangers Fabsil
Clean paintbrush
Clean cloth
Clean tent
Step 1
Ensure your flysheet is clean
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Step 2
Prepare your reproofing solution
Step 3
Apply the solution
Step 4
Rub the treated fabric
Step 5
Leave your tent to dry
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