Ronseal Knot Block White Primer & Undercoat 2.5L

Product rating
3.4 out of 5 stars
Product code:
5010214864829

Price

£30

£12 per L

Ronseal Knot Block White Primer & Undercoat 2.5L

Product code:
5010214864829
Ronseal Knot Block White Primer & Undercoat 2.5L Ronseal Knot Block White Primer & Undercoat 2.5L

Price

£30.00

£12 per L

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  • Home Delivery Order by 7pm (4pm Saturday & Sunday) for next day delivery.
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Product Details

Product Information

Apply this primer & undercoat from the Ronseal Knot Block range to interior , using a brush, to prepare the surface for painting. It takes 2 hours to dry and will cover Up to 12 m² per litre on average.

Features and Benefits

  • Control air pollutants by choosing products with lower solvent levels

Technical Specifications

Technical specification of Ronseal Knot Block White Primer & Undercoat 2.5L
Brand Ronseal
Range Knot Block
Colour description White
Paint type Primer & undercoat
Coverage Up to 12 m² per litre
Durability Undercoat & knot blocking in one, ensuring a longer lasting knot free topcoat finish
Drying time 2hours
Recoat time 2hours
Location Interior
Paint/Stain/Varnish base Water-based
VOC description Low
Application Brush
Colour group White

Health and Safety

Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.

Help & Advice

Wall Painting Calculator

Your requirements

1. What are the wall dimensions?
X
2. What are the dimensions of the windows / areas that you don't want to cover in metres?
X
3. How many doors in the room?
4. How many coats of paint do you want?

Your results

You require:

  • 00 litres of paint

This is based on a coverage of 10m² per litre of paint. Always check the coverage on the side of the tin before buying.

How to guides

How to prepare a wall for painting

How to prepare a wall for painting

While it can be tempting to get painting as soon as possible when you want to decorate a room, it’s worth taking the time to make sure your room and surfaces are best prepared before you begin. Getting the preparation right is crucial to achieving the perfect finish. It’ll also help to keep things neater and cleaner, and reduce the need for additional coats of paint. No paint can completely cover dirty or uneven surfaces, so tackling this at the start of the project avoids the need for extra work later on.

In this guide we’ll walk you through the most important steps to take, and show you how to;

  • Empty your room ready for decorating, and protect fixtures and fittings you aren't painting
  • Clean your walls to help paint adhere
  • Fill holes and cracks and smooth your walls for the best possible finish
  • Prime stained surfaces or those which have not been painted before

Once you've completed these tasks you should have a smooth, even surface ready to be painted.

Walls painted green with white trim

Buying guides

Primer buying guide

Primer buying guide

If you're painting on bare wood, plaster or metal surfaces, you'll get a better result if you use a primer first. It provides a surface which the paint can bond to and stops the paint being absorbed. Find out more what you need and for what surface.

Reviews 3.4  out of 5 stars

Ronseal Knot Block White Primer & Undercoat 2.5L is rated 3.4 out of 5 by 5.
  • y_2017, m_11, d_18, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_GB, sid_5010214864829, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy
Rated 5 out of 5 by from find it easy to paint with this product I like the quality of this product, it is easy to use and leaves a nice finish. Used on knotty pine wood and I used 3 coats. I will be going back this week to purchase a large tin to do the rest of my door surrounds and base boards.
Date published: 2016-03-11
Rated 5 out of 5 by from It works I have used another make for years (shaggy dog) but tried their filler and now their paint and they can rightly say "It does what it says on the tin". The coverage is fantastic. two thin coats ( i used a HVLP sprayer) gave a fantastic result that my wife thought was the top coat!
Date published: 2013-05-10
Rated 5 out of 5 by from Excellent Paint Very useful as it blocks knots as well as priming and undercoating. It is also water soluble so cleaning is easier and it can be over-painted with acrylic paint.
Date published: 2012-10-31
Rated 1 out of 5 by from Do not touch this stuff.....!! I used two tins of this product from Ronseal after recent building works. Used on pine newel posts, skirting and architrave. Followed all instructions with two to three coats then used dulux water based satin finish. Three months later all knots showing through! I could scream all the effort and time spent, and now it all needs rubbing back and redone. Contacted ronseal who offered to supply another tin but Refused any compensation as they said it was a DIY product.
Date published: 2016-09-28
Rated 1 out of 5 by from Simply does not work I applied this as per the instructions and initially the knots weren't visible. After a few months the knots started bleeding through the top coat and a year on the woodwork looks dreadful. This product seems to work no better than standard primer - but costs a lot more. I contacted Ronseal but they were not intersted in knowing that their product does not work. I'm now left with days of work to sort out the mess. My advice is stick to the old trusted Shellac Knotting Solution
Date published: 2015-10-02
  • y_2017, m_11, d_18, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_GB, sid_5010214864829, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy

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