Builders
Carpenters
Electricians
Flooring Specialists
Gardeners
Handymen
Heating Engineers
Painters & Decorators
Plasterers & Renderers
Plumbers
Roofers
Tilers
myFind Tradespeople, compare up to 3 quotes!
It's FREE and there are no obligations
How it works
Ask a trade
Cost guides
Categories
Class A engineering bricks
What are class A engineering bricks and how do they differ from class B bricks?
Expert Trade Answers
"A class Engineering bricks are stronger and higher density and less water absorbent"
Answered on 2nd Dec 2022 - Member since Dec 2022 -
report
"A class bricks will have clean smooth faces , all bricks will be similar size and shape.class b bricks faces can be not as smooth .length and shape can vary."
Answered on 7th Mar 2023 - Member since Jun 2020 -
report
"Class A Engineering bricks will offer a compressive strength of 125N/mm² or more, and will absorb less than 4.5% of water. A Class B brick however will offer compressive strength of more than 75N/mm², and will boast water absorption of less than 7%."
Answered on 12th Aug 2023 - Member since Aug 2023 -
report
"A class engineering brick has higher compression strength and lower water absorption
While a b entering brick has lower compression strength and a higher absorption"
While a b entering brick has lower compression strength and a higher absorption"
Answered on 18th May 2025 - Member since May 2025 -
report
"Class a is load bearing of 125n/mm2 and class b is 75n/mm2 so class a is much stronger normally used underground and class b normally above ground but I wouldn't use class b because they seem to blow and crack in the winter"
Answered on 20th Jun 2024 - Member since Aug 2023 -
report
"Class A engineering bricks are solid whereas Class B's have holes in to strengthen the bind."
Answered on 15th Apr 2025 - Member since Apr 2025 -
report
"A class engineering bricks are rated as stronger at 125kn and less water absorbent by3%"
Answered on 2nd Dec 2022 - Member since May 2022 -
report
"Class a engineer bricks absorb 4 or 5% less of moisture and class b engineers absorb less than 7 or 8% of moisture class a and b also have different compression strength levels"
Answered on 28th Sep 2024 - Member since Jun 2023 -
report
"Class a engineering are a solid form of brick class b have holes in"
Answered on 2nd Dec 2022 - Member since Nov 2022 -
report
Related questions
Search other questions
Ask a Trade
Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.
Ask your question 
Other categories
- Aerial Specialists
- Architects
- Bathroom Specialists
- Bricklayers
- Builders
- Joiners
- Cleaners
- Drainage Specialists
- Driveway Specialists
- Electricians
- Flooring Specialists
- Gardeners
- Handymen
- Heating Engineers
- Kitchen Fitters
- Locksmiths
- Loft Specialists
- Metalworkers
- Painters & Decorators
- Pest Controllers
- Plasterers
- Plumbers
- Removal Companies
- Roofers
- Security Specialists
- Specialists
- Stoneworkers
- Swimming Pool Specialists
- Tilers
- Traditional Craftsman
- Tree Surgeons
- Window Specialists
See all questions
Ask a Trade
Are you looking for advice on a DIY project or have a question for our tradespeople?
We'll email your question to tradespeople who are skilled in your chosen category.
Your question will be made public - please do not include any personal details.
Report Content
Thank you
Your report has been created and will be investigated shortly.
Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year