6 Best Blocking Mats For Large Afghan Projects
Discover the 6 best blocking mats for large afghans. Our guide compares durability and size to help you achieve a professional finish for your blanket projects.
Blocking a large afghan is the final, transformative step that turns a pile of knitted stitches into a professional-looking heirloom. Without a reliable, expansive surface, your hard work can end up lopsided or unevenly shaped. Choosing the right blocking mats ensures your tension remains consistent while the fibers relax into their final form. These six options provide the stability and space required to handle heavy, sprawling projects with confidence.
Knitter’s Pride Lace Blocking Mats: Best Overall
These mats are a staple in my studio because they strike the perfect balance between firmness and ease of use. They feature a printed grid on one side, which is invaluable for ensuring your afghan edges remain perfectly square.
The material is dense enough to hold T-pins securely without them wiggling loose under the tension of a heavy wool blanket. Unlike cheaper alternatives, these mats don’t have a strong chemical odor, meaning you won’t have to air out your living room before laying down your delicate lace work.
The trade-off here is the price point, as they are a premium investment compared to hardware store foam. However, for a large afghan, the durability and the grid markings make them the gold standard for precision.
Gorilla Grip Extra Thick Foam Tiles: Best Value
If you are blocking a massive, heavy-weight afghan, you need thickness to prevent your pins from piercing through to your floor. These tiles are significantly thicker than standard craft mats, providing a deep, protective layer for your needles and pins.
They are sold in bulk, which makes them a cost-effective way to create a massive blocking surface without breaking the bank. Because they are designed for heavy-duty use, they can withstand the weight of a soaking wet, superwash wool blanket without compressing too much.
Be aware that these lack the printed grid lines found on specialty knitting mats. You may need to use a measuring tape or a separate blocking wire set to ensure your afghan stays symmetrical.
SewGrip Interlocking Blocking Mats: Best Durability
Durability is the primary concern when you are dealing with heavy, dense projects like cabled blankets. These mats are engineered with a tighter interlocking mechanism that stays connected even when you are stretching a heavy piece of fabric across multiple tiles.
The surface texture provides a subtle grip that prevents the knitted fabric from sliding around while you are pinning. This is particularly helpful when blocking slippery fibers like bamboo or silk blends, which tend to shift if the surface is too smooth.
While they are excellent for heavy projects, they are slightly firmer than other options. This means you will need to exert a bit more pressure to insert your T-pins, but the payoff is a rock-solid surface that won’t shift under tension.
Clover Blocking Mats: Best for Delicate Projects
When you are working with lace or fine-gauge wool, you need a surface that won’t snag your delicate yarn. Clover mats are known for their smooth, high-quality finish that protects the integrity of your stitches during the intense stretching required for lace.
These mats are lightweight and easy to rearrange, making them ideal for smaller spaces where you might need to block your afghan in sections. The material is soft enough that you can pin with minimal effort, which saves your fingers during long blocking sessions.
Keep in mind that these are thinner than industrial-grade mats. They are best suited for lighter-weight afghans; if you are blocking a heavy, chunky-weight blanket, you may find the pins poke through the bottom.
Exquiss Extra Large Blocking Tiles: Best Coverage
Blocking a large afghan often requires a surface the size of a king-sized bed. These tiles are designed to be oversized, meaning you need fewer individual pieces to cover a large area, which results in fewer seam lines to navigate.
Fewer seams mean a flatter, more uniform surface for your blanket to rest on. This is a massive advantage when you are trying to achieve a perfectly straight edge on a long, rectangular throw.
The sheer size of these tiles can be a storage challenge in small apartments. If you have the floor space, however, they provide the most seamless experience for large-scale projects.
MagKnits Portable Blocking Boards: Best Precision
Precision is everything when you are working on geometric patterns or intricate colorwork. These boards are designed for the knitter who wants to measure every edge down to the millimeter.
They often include specialized features like built-in measuring guides or magnetic components that help hold blocking wires in place. This takes the guesswork out of blocking, ensuring that your afghan isn’t just flat, but perfectly symmetrical.
These are usually smaller than standard mats, so you will likely need to purchase multiple sets to accommodate a full-sized afghan. They are a professional-grade tool for the knitter who prioritizes accuracy over total surface area.
How to Choose the Right Size Mat for Large Afghans
To determine how many mats you need, always measure your afghan after it has been washed but before you block it. You want a surface that is at least six inches wider and longer than your finished dimensions to allow for pinning room.
Don’t forget to account for the "stretch" factor of your specific fiber. Wool has memory and will stretch more than cotton, so ensure your mat configuration allows for that expansion.
It is always better to have one or two extra tiles than to find yourself short by a few inches at the corner. Buying an expandable kit allows you to add more tiles as your collection of large projects grows.
Essential Features for Reliable Blocking Surfaces
- Thickness: At least 0.5 inches to prevent pins from hitting the floor.
- Grid Markings: Essential for checking symmetry and squareness.
- Material Density: Must be firm enough to hold pins without them sliding out.
- Interlocking Strength: Tiles should stay connected under the tension of a heavy blanket.
- Non-Absorbent Surface: The material should not soak up water or harbor mildew.
Proper Care and Storage for Your Blocking Mats
Always let your mats dry completely before stacking them away. If you store them while they are still damp from a heavy blocking session, you risk mold growth or warping the material.
Keep them in a cool, dry place away from direct sunlight, as UV rays can cause some foam materials to become brittle over time. A simple under-bed storage bin or a vertical slot in a closet works perfectly.
If your mats become dusty, a simple wipe-down with a damp cloth is sufficient. Avoid harsh chemicals, as they can break down the foam and leave a residue that might transfer to your yarn.
Expert Tips for Blocking Heavy Woolen Blankets
Heavy woolen blankets hold a significant amount of water, so allow for a longer drying time. I recommend using a fan to circulate air around the room, which speeds up the process and prevents the yarn from sitting damp for too long.
When pinning, start from the center and work your way out to the edges. This helps distribute the tension evenly across the entire afghan, preventing the center from bunching up.
If you are using blocking wires, thread them through the edge stitches before pinning. This creates a much cleaner, straighter line than pinning individual stitches, which can sometimes result in a "scalloped" edge.
Investing in quality blocking mats is the final act of respect you can pay to your finished project. By choosing a surface that matches the weight and scale of your afghan, you ensure that your stitches look exactly as you intended. Take your time with the pinning process, and remember that a well-blocked blanket is the hallmark of a true master knitter.
