- Buy a bottle of seam sealer for a few dollars at a sporting goods store.
- Set your tent up outdoors on a dry sunny day.
- The seam sealer comes in a bottle with an applicator top. Shake the bottle, open the cap, and apply seam sealer to all threads (inside and out) while the tent is erected.
- Allow the sealer to dry for a few hours.
- Repeat the application, and allow the seams to dry thoroughly.
- Don't forget to also seal the seams on your rain fly.
Quality tents come with seams that are factory taped, which is not the same as sealed. Taped seams have a waterproof material placed between overlapped seams, which are then double stitched. This sewing technique adds to the strength of the seam and helps eliminate any gaps when the tent is stretched. These seams will be more water-resistant than normal seams, but they are not water-proof. The seams should still be sealed to ensure the best water-proof protection.