Power Washing and Roof Cleaning Forum

Patrick G · Approved Exterior Cleaner

removing cement from vinyl siding.....

Andy Hinson · Approved Exterior Cleaner

NMD 80 may work

Diamond Roof Cleaning · Approved Exterior Cleaner

Yeah. Call the guy and tell him to get the cement off your siding because you paid him to put the concrete on the ground not the siding.

Art O · Approved Exterior Cleaner

GTS Building Supply on vets has a cleaner

Steve Salley · Approved Exterior Cleaner

I'm with Mike on this one! I cannot believe it is expected collateral damage to splatter surrounding surfaces when pouring concrete and then treat it like someone's else's problem...

While it is fairly new, it comes right off, but let it really dry on the siding and it becomes really difficult to remove.

My suggestion is to try Grout and Haze Remover, which is a mild acid to soften them. We used it extensively in my flooring career to make removal any heavy cementitous grout haze from surfaces. It is critical to soften because you can actually remove the vinyl surface if mechanical methods are used without first softening.

Home Depot and or Lowes has it in their flooring sections.

Patrick G · Approved Exterior Cleaner

Ok thank you gents

Michael Hickey · Approved Exterior Cleaner

You could try hot water on a spot. It will help soften the cement up. Just try it where it cant be seen first.

DirtyRoofcom · Approved Exterior Cleaner

i would get oFf what you can then attempt muriatic acid. i DO NOT KNOW THE EFFECTS OF MURIATIC ON VINYL SO RESEARCH FIRST

DirtyRoofcom · Approved Exterior Cleaner

or you could put one of my bandit signs in front of it

Maverick Contracting · Approved Exterior Cleaner

Ive heard someone mention in the past that it can discolor to a yellowish tinge.
It is poly stable as I have a few gallons in plastic containers but they are clear, vinyl siding is either tinted throughout in the color of choice or i have seen some that the color is only on the top layers. saw a house that the contractor thought was mold and or dirt on light brown vinyl siding and tried power washing it off, needless to say they took off a LOT of uv broken down topcoat and the vinyl "core" was black!

Needless to say the contractor "bought" a new paint job.

Art O · Approved Exterior Cleaner

Maverick Contracting wrote:
Ive heard someone mention in the past that it can discolor to a yellowish tinge.
It is poly stable as I have a few gallons in plastic containers but they are clear, vinyl siding is either tinted throughout in the color of choice or i have seen some that the color is only on the top layers. saw a house that the contractor thought was mold and or dirt on light brown vinyl siding and tried power washing it off, needless to say they took off a LOT of uv broken down topcoat and the vinyl "core" was black!

Needless to say the contractor "bought" a new paint job.

That would be Nail Lite Shake. It has a painted finish on it. When I wash it I pre wet and Lite S/H. Real easy to damage it. Pure Junk!

Jeff Wible · Approved Exterior Cleaner

As to the question on Hydrochloric Acid being used on vinyl siding. I use it all the time as part of my two step attack on siding that has that grunge the first few feet under soffit, porch areas and sometimes on the whole house. I use the "Safer" stuff from Walmart,..it isn't as aggressive as the straight 37% that is typically sold. But, I have used the 37% cut in 1:3 and it never harmed siding.
At stronger concentrations especially,.. it can be very aggressive on oxidation.

The safer type of Hydrochloric is like the "Acid Magic" sold at Ace hardware,..it is buffered so it doesn't give off the same fumes as regular Hydrochloric. I is said to be just as strong as the 37%,.but I don't think it is,..but it is more user friendly for my purposes. For two stepping I use it 1:1.

*I have seen the vinyl shakes that are black at the core,.and also many shutters are made that way,....never seen vinyl siding with the black core though.

Jeff