So you have a leaky tent what do you do? Some people might want to go an buy a new tent but there is a cheaper option. 

• First make sure that you are pitching the tent correctly. 
• Apply something like Seam Grip, McNett’s Thunder Shield or the pick of the bunch Thompsons Waterseal to apply a new waterproof coating. The best areas is along seems, along the bottom and any areas of tension. Normally at corners. 
• To check for holes, hang the tent from two washing lines then spray water into it. This way you can find any leaks from holes. 
• If you have a hole, seal on both sides with duck tape and then use a sealant.