What the heck is a double-cut seam, and why is it important to your wallpaper installation?
When it comes to wallpaper, the magic is in the details, and that includes how the seams are executed. If you’ve ever admired a perfectly papered wall and wondered why it looks so smooth, the answer is probably great seam work. When it’s good, no one notices the seams, but when it’s bad, it can ruin the entire aesthetic of the room.
Definitely the least exciting part of adding wallpaper to your room, but knowing the differences between the various types of wallpaper seams is more important than you may think. Let’s chat through the most common types:
Types of Wallpaper Seams
When wallpaper is installed, the edges of each strip must meet perfectly so that the pattern lines up and the wall appears seamless. The technique used depends on the wallpaper and the overall style you’re going for.
1. Butt Seams
This is the most common type of wallpaper seam, especially for smooth, non-textured papers that often don’t include a repeat pattern.
How it works:
Two strips of wallpaper are installed side by side so the edges touch perfectly without gaps or overlaps.
Two strips of wallpaper are installed side by side so the edges touch perfectly without gaps or overlaps.
When it works best:
Ideal for flat or lightly textured wallpapers where pattern alignment is simple.
Ideal for flat or lightly textured wallpapers where pattern alignment is simple.
Pitfalls:
Butt seams can sometimes be visible, especially with heavier textures, where edges may lift over time.
Butt seams can sometimes be visible, especially with heavier textures, where edges may lift over time.
2. Overlapping Seams
With this method, one strip slightly overlaps the next.
How it works:
One edge of wallpaper is laid over the edge of the previous strip, then smoothed to reduce ridges.
One edge of wallpaper is laid over the edge of the previous strip, then smoothed to reduce ridges.
When it works best:
Commonly used for thicker, commercial-grade wallpapers. It’s not usually recommended for designer wallpaper since the overlap can be noticeable.
Commonly used for thicker, commercial-grade wallpapers. It’s not usually recommended for designer wallpaper since the overlap can be noticeable.
Pitfalls:
Overlapping seams can create raised edges or disrupt the flow of a pattern, like little speed bumps. In other words, it looks cheap!
Overlapping seams can create raised edges or disrupt the flow of a pattern, like little speed bumps. In other words, it looks cheap!
3. Double Cut Seams (aka...how to make your walls look and feel boujee)
If you want a seamless, clean, and elevated look, double-cut seams are the way to go.
How it works:
Two strips of wallpaper are slightly overlapped, then carefully cut through both layers at once. This creates perfectly matching edges that fit together with nearly invisible seams.
Two strips of wallpaper are slightly overlapped, then carefully cut through both layers at once. This creates perfectly matching edges that fit together with nearly invisible seams.
Why this option is the bees' knees:
- Works beautifully with textured and patterned wallpapers
- Keeps patterns aligned with no gaps
- Avoids lifting or curling over time
- Creates a smooth, professional finish
How to Execute a Perfect Double Cut Seam
This method takes precision and patience, so it’s best left to an experienced wallpaper installer, a wallpaper ninja. Here’s what the process looks like:
Step 1: Overlap the Panels
Lay the wallpaper panels with a small overlap, typically around two inches, ensuring the pattern lines up perfectly.
Lay the wallpaper panels with a small overlap, typically around two inches, ensuring the pattern lines up perfectly.
Step 2: Make the Cut
Using a sharp utility knife and a straightedge, the installer cuts down the middle of the overlap through both layers. No shaky hands need apply; a steady hand is key here. If the cut wavers, the seam will show. You also need to have many extra blades available and plan to frequently change the blade on your straight edge.
Using a sharp utility knife and a straightedge, the installer cuts down the middle of the overlap through both layers. No shaky hands need apply; a steady hand is key here. If the cut wavers, the seam will show. You also need to have many extra blades available and plan to frequently change the blade on your straight edge.
Step 3: Remove the Excess
Slowly and carefully pull away the extra strips from both layers, leaving perfectly matched edges that fit together seamlessly.
Slowly and carefully pull away the extra strips from both layers, leaving perfectly matched edges that fit together seamlessly.
Step 4: Seal the Seam
The installer smooths the seam with a small roller to ensure it lies flat and level.
The installer smooths the seam with a small roller to ensure it lies flat and level.
Why Double Cut Seams Require an Expert Touch
Double cutting is a technique that takes real skill. Even the tiniest mistake can make the seam visible or throw off a pattern. That’s why hiring a professional wallpaper installer is so important, they’ll know how to handle the material and tools for the best result.
Tips & Tricks for a Seamless Install
Hire a pro: Save yourself the headache and leave the job to the professionals. Also, it is important to ask your installer before booking if they have experience with double-cutting wallpaper.
Order extra: You’ll need a little more wallpaper for this technique since part of each overlap is trimmed away. Aim for about 20% extra.
Check your rolls: Before cutting, confirm that all of your rolls match. Nothing's worse than having your installer booked and ready to go, only to find out there’s an issue with the paper!
Now that you know all the fun facts, ready for a room facelift?!
Wallpaper is one of the easiest ways to completely change the look and feel of a room. With a smooth install and invisible seams, your space will look elevated, tailored, and effortlessly chic.
At House Party, we create wallpaper designed to make your home feel beautiful, lively, and ready for your next get-together. Browse our collection and start planning your dream space today.
Happy Wallpapering!
Alexis