{"id":3572,"date":"2026-10-22T00:05:43","date_gmt":"2026-10-21T16:05:43","guid":{"rendered":"http:\/\/www.siskiyoucustommilling.net\/blog\/?p=3572"},"modified":"2026-10-22T00:05:43","modified_gmt":"2026-10-21T16:05:43","slug":"how-do-i-protect-a-premade-house-from-pests-4b07-758276","status":"publish","type":"post","link":"http:\/\/www.siskiyoucustommilling.net\/blog\/2026\/10\/22\/how-do-i-protect-a-premade-house-from-pests-4b07-758276\/","title":{"rendered":"How do I protect a premade house from pests?"},"content":{"rendered":"

Hey everyone, it\u2019s Jake here, and if you\u2019ve ever dealt with premade houses\u2014whether you\u2019re a first-time buyer, someone downsizing, or even a fellow industry person like me\u2014you know how awesome these customizable, quick-to-setup spaces are. But here\u2019s the thing that no one talks about enough: pests. I\u2019ve been in the premade houses game for 8 years now, and I\u2019ve seen so many folks get tripped up by ants, rodents, even termites because they didn\u2019t set up the right protections early. Today, I\u2019m breaking down exactly how we as a premade house supplier, and you as an owner, can keep these uninvited guests out for good. No fancy jargon, just real stuff I\u2019ve learned from fixing headaches for customers. Premade Houses<\/a><\/p>\n

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First off, let\u2019s get one thing straight: premade houses aren\u2019t more prone to pests than stick-built homes. But because they\u2019re often built in factories, transported, and set on new lots, there are a few unique spots where pests can sneak in if you\u2019re not paying attention. That\u2019s why we built our pest-protection guide into every unit we ship\u2014so you don\u2019t have to start from scratch. Let\u2019s dive into the most actionable steps, not the \u201cspray some bug spray and hope for the best\u201d stuff.<\/p>\n

Start With the Foundation\u2014Your Biggest Pest Line of Defense<\/h3>\n

When a premade house arrives, the first thing we do is set it on a foundation. A lot of people skip prepping the foundation for pests, and that\u2019s where trouble starts. I once had a customer in Texas who set their tiny home on a concrete slab that had leftover wood scraps from the construction crew\u2019s tools. Within a month, carpenter ants were chewing through the subfloor like it was butter. So here\u2019s my rule: before your unit even rolls onto the lot, make sure the ground beneath and around the foundation is clear of any food or shelter for pests.<\/p>\n

We actually add a pre-installed termite shield to every premade house we ship\u2014wait, no, not a flimsy plastic one. We use a galvanized steel barrier that wraps around the foundation, 6 inches above and 6 inches below ground. Termites can\u2019t chew through that, and rodents can\u2019t squeeze through the gaps. If you\u2019re setting up a unit yourself, grab a similar steel barrier (it\u2019s not expensive, I promise) and cover any soil-to-wood contact points. Even a small gap between the bottom of your house\u2019s frame and the ground is enough for a mouse to slip through. We also recommend a 12-inch gap between the foundation and any mulch or vegetation\u2014pests love hiding in mulch, especially moisture-loving ones like carpenter ants.<\/p>\n

Another foundation hack: if you\u2019re on a crawl space (super common for premade houses), seal every vent and access point with heavy-duty wire mesh. Not the flimsy screen you use for window flies\u20141\/4-inch hardware cloth. That keeps out mice, rats, and even snakes if you\u2019re in a warm area. I\u2019ve had customers in Arizona tell me scorpions got in through a crawl space vent, but once they added the mesh, that problem was gone for good. We include that mesh in every customer\u2019s welcome kit because it\u2019s a no-brainer.<\/p>\n

Seal Up the \u201cHidden Entrances\u201d Most People Miss<\/h3>\n

Premade houses have a lot of joints\u2014where the wall panels meet, where the roof meets the walls, where the windows and doors are installed. Factory-built units use adhesives and fasteners, but over time, those can shift, especially if you\u2019re moving the unit a few times (like some folks do with tiny homes). Pests exploit every tiny crack. We once found a colony of odorous house ants living in a 1\/8-inch gap between a window frame and the wall\u2014they were coming from a tree 20 feet away, but they just squeezed through that small space.<\/p>\n

So here\u2019s what we do for every unit: we use expanding foam that\u2019s pest-resistant, not the cheap stuff that breaks down in a year. It seals gaps up to 1 inch wide, and it\u2019s safe for wood and vinyl. For gaps smaller than that, we use silicone caulk (the paintable kind) to fill in around pipes, electrical wires, and any other penetrations. Wait, speaking of pipes\u2014if you have a plumbing line going through the wall, make sure the space around it is sealed tight. Roaches and ants love hanging out in pipe chases, and once they get in, they\u2019re hard to get rid of.<\/p>\n

Also, don\u2019t forget the roof! A lot of premade houses have metal roofs, but if the flashing is loose, that\u2019s a spot for roof rats to climb in. We use heavy-duty aluminum flashing, and we caulk all the seams to prevent gaps. I\u2019ve seen rats jump onto a roof from a nearby tree, so trimming branches back at least 3 feet from the house is a simple step, but it works. No easy access means they won\u2019t even try.<\/p>\n

Keep Food Sources Away\u2014It\u2019s Not Just for Kitchens<\/h3>\n

Pests aren\u2019t just after crumbs on your counter. They\u2019ll eat anything: cardboard boxes, pet food, even the glue in your walls. We get so many calls from customers saying \u201cwe\u2019re clean\u2014why are we getting ants?\u201d and 9 times out of 10, they have a bag of dry dog food sitting on the floor of the living room, or cardboard storage boxes in the closet.<\/p>\n

Here\u2019s our rule for food storage in premade houses: use plastic, airtight containers, not cardboard or paper. That goes for pet food, cereal, pasta\u2014everything. Cardboard is like a welcome mat for roaches and beetles. We even recommend a small plastic bin for your trash, not a mesh bag. Empty the trash every night, because even a small food scrap will draw pests in.<\/p>\n

And don\u2019t forget outside the house! If you have a porch, keep any plants or planters away from the walls. Overgrown plants trap moisture, which is a magnet for termites and mosquitoes. We also tell customers not to store firewood within 20 feet of their premade house. Termites love firewood, and if you stack it right next to the wall, they\u2019ll just walk from the wood into your frame. One of our customers in North Carolina learned this the hard way\u2014they had a stack of firewood by the door, and within two months, termites had eaten through the baseboard. Don\u2019t be that guy.<\/p>\n

Regular Checks\u2014Stick to a Routine That Actually Works<\/h3>\n

Pest protection isn\u2019t a one-and-done deal. You gotta do small, regular checks to catch problems before they get big. We tell every customer to do a 10-minute check once a month\u2014seriously, that\u2019s all it takes. Here\u2019s what to look for:<\/p>\n