How do we determine a 30% contrast?
The importance of having opaque risers on steps.
Some people can only differentiate in various degrees of black and white.
That is why we need to have a scale, and the magical 30% difference in LRV percentages.
……Now I think I understand ……
I hated fractions in maths but this is all about percentages …!
Which carpet tile provides the correct LRV value when comparing it to a stair nosing strip or stair nosing insert.
Access consultants fall back on the “solid band of colour” stated in the AS 142902009 Standards
Perhaps we need to understand why, and question as to whether or not they do comply in terms of LRV
Patterned floor covering finishes really affect the type of stair nosing you may choose.
When trying to achieve the 30 point difference you must take into consideration how light is reflected on patterned surfaces .
Some LRV values for plain floor finishes will surprise you. You need to take that into consideration when trying to work out the 30% or point rule.
installing stair nosing on a fire escape
Installing stair nosing on fire escapes. When we installed the stair nosing we had to drill a pilot hole, drill a larger hole, insert a plug, place nosing insitu, and then screw in the screw. Once that process was completed the stair nosing inserts could then be installed.
Why do you have to use the 
punch method when installing stair nosing on steps that have broadloom carpet.
Step by step instructions on installing stair nosing on broadloom carpet where a “punching” method is not required.
Stair nosing is easy to install when using Soudal Adhesive
Why use Soudal?
- Very high initial tack
- No primer required
- Good resistance to water, aliphatic solvents, hydrocarbons, ketones, esters, alcohols, diluted mineral acids and alkalis and (salt) water.
- UV Resistant
- Good adhesion on wet substrates
- Elastic bonding to allow for contraction and expansion
- All weather conditions
