Description
This masonry block brush 170 mm from Blue Dolphin is a wide brush with 70 mm bristle on a varnished beech handle. Blue Dolphin makes it in Poland for priming and painting large, rough surfaces fast: rendered and plastered walls, facades and other external walls. It sits with the paint brushes and rollers at Renders World.
What the Masonry Block Brush 170 mm Does
The wide head of the block brush covers a masonry wall quickly, and the filling holds plenty of material, so you dip into the bucket less often. On an uneven, textured surface the brush runs steadily.
- 170 mm head, 70 mm bristle. A wide working part that cuts the time spent on big areas.
- Natural and X-shaped fibres. A mix of absorbent natural bristle and synthetic fibres with an X-shaped cross-section, which picks up more material and spreads it more evenly.
- Thin and thick materials. It works with runny primers as well as thicker facade and emulsion paints.
- Solid beech handle. Varnished, smooth and sure in the hand, less prone to swelling in the wet and easier to clean after work.
- Ready to use. No assembly: the masonry block brush 170 mm is ready to work straight from the pack.
Where to Use It
- Priming. Priming render, plaster and facade walls with the block brush before the paint coat.
- Facade and masonry paint. Painting rough, textured external walls with facade and emulsion paints, using the block brush.
Choosing the coat for the masonry block brush? See the primers for render and masonry and the silicone paints for masonry. For narrower places, Blue Dolphin pairs the masonry block brush with a radiator brush, such as the 50 mm radiator brush.
Specification
| Detail | Blue Dolphin block brush 170 mm |
|---|---|
| Brush width | 170 mm |
| Bristle length | 70 mm |
| Filling | Natural bristle mixed with synthetic X-shaped fibres |
| Handle | Solid beech, varnished |
| In the pack | 1 brush |
| Maker code | PL_13705 |
| Maker | Blue Dolphin, XL-Tape-International (Poland) |
Blue Dolphin also makes this masonry block brush 180 mm wide (76 mm bristle) and 190 mm wide (83 mm bristle).
Ordering, Delivery and Returns
- Dispatch — orders leave Renders World the same day when the item is in stock.
- Delivery — the team gives you the delivery estimate after you order; courier parcels arrive within one business day on express delivery or two on economy.
- Collection — from the counter at Unit 9A, Central Trading Estate, Southampton SO14 5JP, Monday to Friday 7am to 5pm and Saturday 7am to 12pm.
- Returns — goods bought directly from Renders World can come back within 14 days in original condition; special orders and goods bought under a promotion are excluded. See the returns page.
FAQ
How wide is the brush?
The masonry block brush 170 mm is 170 mm wide, with 70 mm long bristle.
What is a block brush used for?
Priming and painting large, rough surfaces quickly: renders, plasters, facades and external walls.
Which paints can I use it with?
Facade paints, emulsion paints and primers, from runny to thick.
What is the bristle made of?
A mix of natural bristle and synthetic fibres with an X-shaped cross-section.
Does it come in other sizes?
Blue Dolphin makes it in 170, 180 and 190 mm. Renders World sells the 170 mm size.

