All you have to do is simply clean the exterior walls with a garden hose on medium pressure to wash off dirt and dust and wipe it off with a smooth towel.
Do you have to prime hardie siding.
Do not use stains or oil based alkyd paints on james hardie products.
James hardie developed the first factory applied primer for fiber cement siding.
Hardie siding requires a minimum 2 gap from all hard surfaces like decks or rooflines and at least 8 from any soft surfaces like grass dirt or gravel.
This is not the case with james hardie siding.
Remember you ll still be purchasing paint and potentially hiring a crew of painters if you choose primed board instead of james hardie colorplus siding.
Whether you ve got a colorplus finish or custom paint on your existing hardie siding you don t have to use primer when re painting hardie.
If your siding is unprimed the time frame shortens to 90 days or 3 months to have surfaces painted.
Re applying caulking when it has begun to show signs of wear can help keep moisture from getting into the wall cavity.
Fiber cement siding repair or patching.
During my time working for james hardie i very rarely got calls from homeowners that wanted to submit a warranty claim for their hardie siding.
For additional information on finishing james hardie products download technical bulletin 22 from here.
Although hardie board comes from the factory without the back of the board primed according to james hardie s support department they say you can prime and paint the entire board paint coat thickness is calibrated and consistently applied according to manufacturer s specifications something that is just not possible when painting by.
Traditionally you would have to prepare a primer for your paint before applying it to your siding.
Paint hardiplank siding within installation time frame after installation of primed hardiplank siding it is recommended to have it painted within 180 days or roughly 6 months.
Our distinctive gold primer for hz10 products and green primer for hz5 products are climate tested and engineered to enhance the performance of paint on james hardie fiber cement siding.
The good news is hardie siding is easy to repaint.