The first thing to be aware of is that your X-Mid uses a fabric with different coatings on each side. As a result, different tapes and adhesives will stick to different sides. More specifically, the X-Mid fabric uses a silicone coating on the outside and a PE coating on the inside, where silicone based adhesives will only stick to the outside, and PU or PE based adhesives will only stick to the inside. So for example, a silicone based adhesive will only stick to the outside of the fly and the bottom side of the floor.
Before we get into specific repair products, it’s worth discussing how you’re going to repair that damage. Generally speaking, if you have damage from very small holes or abrasion you can solve it using only liquid adhesives. If you have medium sized holes you’ll likely be better served with a repair tape on one or both sides, with possibly a liquid adhesive on the other. If you have a small cut or puncture, a good solution is repair tape on one side to close the wound and then liquid adhesive on the other to glue it shut. However, if a piece of the tent is actually missing (e.g. from melt hole) then you’ll want tape on both sides to patch that hole.
If you have large holes, long rips, or other major damage you could try to repair it with repair tape, but quite likely sending it to professional gear repair shop like Rainy Pass Repair or someone else who can sew is the way to go. Professional Gear repair shops can also repair zippers and mesh damage.
Lastly, if you have damage to your bug netting (noseeum mesh) there are some repair patches you can use, but sewing is usually the best approach (and even that is difficult).
There are three main ways to repair your tent:
1) Liquid adhesives
The most common repair adhesive is Seam Grip by GearAid (formerly McNett), which most outdoor gear stores sell. Seam Grip comes in several versions and has undergone quite a few name changes, which makes things a bit complicated. Historically all of these versions were PU based so they would only stick to the inside of the X-Mid fly. These versions differed mostly based on how thick they were (thinner adhesive for sealing tent seams, thicker adhesive for repairing boots). However, GearAid has recently added a silicone based version as well that will stick to the outside of your fly.
Currently, Gear Aid offers Seam Grip +WP which is the standard Seam Grip and will work nicely for repairs to the inside of your tent (inside of the fly or top side of the floor), they also offer Seam Grip+SIL which is silicone based and thus works nicely on the outside of your tent. Additionally, they offer Seam Grip TF where TF stands for tent fabric. That is PU based and sounds like ideal stuff since it has tent right in the name, but it’s much more diluted and intended for sealing leaking fabric and seams – not gluing actual holes shut. So it’s too thin to really glue a hole shut. This is also PU based, so it could be used on the inside of your tent if you had tiny holes or abrasion that doesn’t warrant a thicker adhesive.
Besides the products from Gear Aid, a lot of adhesives will stick to the PU side although use them carefully (test on the stuff sack if you’re not sure). A cheaper homemade alternative for a silicone based adhesive is to buy a tube of clear silicone caulk at your local hardware store and dilute it down with mineral spirits to the right consistency.
2) Repair tapes
Another easy method of repair is using repair tapes and patches. Compared to a liquid adhesive, these can better reinforce larger tears and also patch over larger holes. The downside is that they can peel over time if they’re not properly applied, and they can look out of place if the color isn’t matched.
Gear Aid is also the go-to company for repair tapes. They make a popular tape called Tenacious Tape that is a light woven fabric with an adhesive backing. The regular version of this is simply called Tenacious Tape and it conveniently comes in a sage color that closest matches the X-Mid (see here). It’s a great option except it uses a PU based adhesive, which means it only sticks to the inside of the X-Mid. However, they do have a new version of Tenacious Tape out now called “Tenacious Tape Silnylon Repair Patches” which does uses a silicone based adhesive and thus will stick to the outside. The only downside here is that it only comes in a light grey. Gear Aid argues that it’s fairly translucent so it matches the color of what it’s stuck to, which is partially true but it will look a bit out of place on your fly. With either tape, it’s important that it’s applied to fabric that is dry and clean. Wiping it down with alcohol prior to application is ideal.
An alternative to Tenacious Tape is making your own. You can create your own perfectly matched repair patches by cutting up the stake sack or the main stuff sack (for large repairs) and then gluing those on with the previously mentioned liquid adhesives. We recommend applying a thin coat of the adhesive to the patch or to the tent surface, then sticking on the fabric patch, and then adding a little more liquid adhesive around the edges of the patch to make sure the edges are glued down. The #1 challenge with creating your own patches is getting the sides of the fabric aligned correctly. Like with the tent, you only want to apply silicone adhesives to the silicone side and PU adhesives to the PU side, so you have to worry about not only which side of the fly you are sticking this to, but also which side of the patch you are gluing on. Again the silicone is on the outside of the stuff sacks, so if you wanted to create a repair patch for the outside of the tent fly (silicone side) you would need to stick the outside of your patch to the outer side of the fly. Getting this wrong will lead to poor adhesion that will likely come off over time.
Lastly, if your damage is to the bug netting then the only DIY option on the market are the mesh patches from Tenacious Tape. People generally find these work okay but they don’t stick that well, so you may prefer to get it professional repaired with a sewn-on mesh patch.
Liquid adhesives and tapes can only get you so far, and then sewing becomes necessary. You’ll need to sew (or find someone who can) for major damage, zipper repair, and issues with components sew into the fly like webbing or velcro needing to be replaced. If you don’t sew, we recommend sending your tent to an outdoor gear repair shop, such as Rainy Pass Repair. They will do a professional job of repairing your gear for a modest price, which is typically $30 – $50 for most repairs. There are lots of other gear repair shops too, so you may be able to find one closer to you. Here is a list of a few of them.