Selecting the best jointing knives - Gyproc Tools Blog

The right jointing and taping knives are essential in any toolkit to ultimately achieve a flawless and smooth finish.

Jointing knives are a must-have in every drywall professional, decorator and plasterer’s tool kit, as well as the DIY-er managing their own home improvements. They’re essential for preparing walls for painting, plasterboarding and filling/smoothing joints.

You’ll find that jointing knives typically have a wider blade with sloping sides to spread joint compounds over any surface and to fit into corners without damaging walls.

There’s no doubt that choosing the right jointing knife makes a huge difference to your productivity. After all, you don’t want to finish your job with more compound on your tool than on the joint or wall!

When selecting which tools to use, it’s essential that you think about the design, material, usability, size, and special features.

Gyproc has jointing knives in a range of sizes from 100mm to 350mm with various features, suitable for all kinds of taping and jointing jobs.

Stainless steel is a common material used for jointing knives for its durability and anti-rust properties.

Some popular knives in the Gyproc range:

STAINLESS STEEL JOINTING KNIFE – SOFTGRIP HANDLE

High-flex stainless steel blade (75mm deep) set in a strong non-ferrous back plate.

• Durable, non-slip SoftGrip rubber handle for day-long user comfort.
• Stainless steel blades which are long-lasting, anti-rust, and durable.
• Available in 250mm, 300mm, 350mm. 

HAMMER HEAD JOINTING KNIVES

Premium quality with high-flex stainless steel blades.

• The SoftGrip handles feature metallic end caps for knocking back protruding nail heads, making the knife multi-purpose.
• Available in 125mm and 150mm.

GYPROC FLEXI-KNIFE
A highly flexible jointing tool, designed for finishing obtuse angles.

• Ideal when finishing loft conversions, or bay windows for example.
• Extendable handle with a standard 25mm shaft if required.

Top tips: Looking after your knives
1/ Caring for your tools will preserve their life so always clean your knives with water and dry well immediately after use. Allowing joint compound to harden on the knife will make it difficult to clean, may impair its use and can cause rust to form on the metal blade.

2/ For blued steel knives, it’s best practice to periodically wipe the blades with oil (e.g. with vegetable oil). This helps to preserve them longer and prevent the blades from rusting.