Spray tip LTX621

Using Spray tip LTX621 on roof coating jobs

Graco tip numbers tell you the spray pattern. The first digit multiplied by 5 gives the fan width in centimetres at 30 cm from the surface, and the last two digits give the orifice size in thousandths of an inch. Roof primers and membranes usually need larger orifices than interior paint, and the coating's data sheet states the recommended range.

Coatings wear the orifice over time. When coverage changes or the fan develops heavy edges at the same pressure, change the tip and keep a spare of each size.

Roof job checklist

• Read the coating's data sheet for tip size and pressure
• Fit fresh inlet, pump and gun filters
• Pack spare tips
• Test spray on cardboard before starting
• Flush and protect the pump after the job

Pickup and delivery

Collect Spray tip LTX621 from our Doveton or Mulgrave yard, or order online for delivery. Delivery is free on orders over $400 within about 20 km of either yard, with a flat $70 fee for smaller orders in the same area. See shipping and delivery for the details.

Related guides

• Airless spray tips for roof painting
• Best roof paint for concrete tiles

See all spray tips and accessories and Graco spray equipment.

Spray tip LTX621: common questions

What tip size suits roof paint?

Use the range on the coating's data sheet. Roof membranes and primers usually need larger orifices than interior paint.

Why is my sprayer spraying unevenly?

Usually a worn tip or a blocked filter. Change the tip, clean or replace the filters and test spray again.