Gimp is a narrow, flat textile trim, typically 1/4 to 1 inch wide, used in upholstery to cover raw fabric edges and hide staples or tacks. It’s applied along seams, around borders, and where fabric meets wood or other structural elements, providing a clean, finished appearance. Unlike wider trims like tape or braid, gimp lies flat, making it ideal for sleek, tailored looks.
Choosing the right gimp for your project
The primary decision when selecting gimp is its material. Your choice impacts durability, appearance, and suitability for different furniture types.
Cotton gimp
Cotton gimp is soft, flexible, and comes in a vast array of colors and patterns. It’s a good general-purpose option for indoor furniture that won’t see heavy wear. It’s also relatively inexpensive. However, cotton can stain easily and may fade over time with sun exposure.
Polyester gimp
Polyester gimp offers better durability and resistance to fading and staining than cotton. It’s a more robust choice for furniture that gets a lot of use, such as living room seating. Polyester also holds its shape well and is less prone to wrinkling.
Rayon or acetate gimp
These synthetic fibers can mimic the look of silk and often have a lustrous sheen. Rayon and acetate gimp are suitable for more decorative pieces or furniture in low-traffic areas where a touch of elegance is desired. They are less durable than polyester and can be prone to crushing.
Velvet gimp
For a luxurious feel, velvet gimp is an excellent choice. It adds texture and depth, perfect for accentuating details on chairs, sofas, or headboards. Velvet gimp requires careful handling during installation to avoid crushing the pile.
Specialty gimp
You can also find gimp made from blends, linen, or even metallic threads for a unique look. When choosing, consider the existing upholstery fabric, the furniture’s style, and its intended use.
Understanding gimp width and application
Gimp typically ranges from 1/4 inch to 1 inch in width. The appropriate width depends on what you need to cover and the scale of the furniture piece.
- 1/4 inch to 1/2 inch: Ideal for covering very fine seams or piping on delicate pieces like accent chairs or dining chair seats.
- 5/8 inch to 3/4 inch: The most common sizes, suitable for general upholstery work on sofas, armchairs, and ottomans. They effectively hide staple lines and provide a noticeable border.
- 1 inch or wider: Used for larger furniture pieces or when a more prominent decorative border is desired.
The application of gimp is crucial. It’s typically attached using staples, glue, or small nails. The goal is to have the gimp lie perfectly flat, concealing the underlying edge or staple line without puckering or distorting.
How to measure and cut gimp for upholstery
Accurate measurement is key to a professional finish. You’ll need to measure the length of each edge where the gimp will be applied.
1. Measure twice, cut once: Measure the length of the seam or edge carefully. Add about 2-3 inches to this measurement to account for the overlap and the return (the part that turns the corner or tucks under). This extra length allows for adjustments and ensures you don’t run short.
2. Use sharp tools: For clean cuts, use a very sharp pair of upholstery shears or a rotary cutter with a fresh blade. Dull tools can fray the edges of the gimp, making them difficult to work with.
3. Cutting technique: Cut the gimp straight across. If your gimp has a distinct front and back, ensure you are cutting it with the correct side facing up.
4. Consider corners and curves: For inside corners, you’ll need to clip the gimp slightly or fold it neatly. For outside corners, you’ll often create a mitered fold for a clean finish. Curves may require small notches or easing the fabric around the bend.
Installing gimp upholstery trim
Proper installation is what separates a DIY project from a professional job. The most common methods involve staples or adhesive.
Using staples
This is the most traditional and secure method for most upholstery applications. You’ll need a staple gun (manual, electric, or pneumatic) and staples that are appropriate for your staple gun and the thickness of the fabric and gimp.
- Position the gimp: Start at an inconspicuous spot, like the underside of a cushion or the back of a chair, and align the gimp along the edge you want to cover. Ensure it lies flat.
- Staple securely: Place staples approximately 1/2 inch to 3/4 inch from the edge of the gimp, into the wood frame or the existing fabric edge. Space staples about 1 to 1.5 inches apart, or closer on curves and corners.
- Work along the edge: Gently pull the gimp taut as you work your way along the edge, ensuring it remains flat and wrinkle-free. Avoid over-stretching, which can cause puckering later.
- Corners and returns: For outside corners, fold the gimp to create a neat miter. For inside corners, you may need to clip the gimp or create a small pleat. For the end of the gimp run, tuck the raw edge under itself or onto the underside of the furniture for a clean finish.
- Check for looseness: Once stapled, gently tug on the gimp to ensure it’s secure. If it feels loose anywhere, add another staple.
Using adhesive
For some applications, particularly when dealing with delicate fabrics or when stapling isn’t feasible, upholstery adhesive can be used. This method is often faster but can be less durable than stapling and may be visible if not applied carefully.
- Apply adhesive: Use a fabric-specific upholstery adhesive. Apply a thin, even bead along the edge where the gimp will be placed.
- Position and press: Carefully lay the gimp onto the adhesive, pressing firmly along its entire length.
- Hold in place: You may need to use upholstery clips, painter’s tape, or weights to hold the gimp in place while the adhesive dries according to the manufacturer’s instructions.
- Work in sections: For larger areas, work in small sections to prevent the adhesive from drying out before you can position the gimp.
Common mistakes to avoid with gimp upholstery
Even experienced upholsterers can make mistakes with gimp. Being aware of these common pitfalls can save you time and frustration.
- Not enough gimp: Always err on the side of too much rather than too little. Running out mid-project is a common and costly error, especially if the gimp is from a specific dye lot.
- Uneven tension: Applying gimp too loosely will result in a saggy, unprofessional look. Too much tension can pull the underlying fabric or cause the gimp to ripple. Aim for consistent, moderate tension.
- Poorly executed corners: Mitered corners that are sloppy or bulky detract significantly from the finished piece. Practice folding and creasing gimp for clean corners.
- Visible staples: Ensure staples are driven flush with the surface and are not left sticking out. If using adhesive, ensure no glue seeps out onto the visible gimp surface.
- Wrong gimp width: Using a gimp that is too narrow won’t adequately cover the seam or staples, while a gimp that is too wide can look overpowering or obstruct other design elements.
- Cutting gimp with dull tools: This leads to frayed edges that are difficult to work with and can result in a messy application.
For further guidance on trim selection and installation, you can refer to our article on gimp upholstery trim: choose and install it right. Understanding the different cloth upholstery options and how they pair with trim is also beneficial.