Many factors can contribute to this problem.
Does stained siding wood peel.
The ideal temperature for staining decks is between 50 f to 90 f.
We will cover several factors that contribute to poor adhesion in detail but if the stain does not properly stick to the wood it will almost always peel.
First many house painting contractors promote the use of a two coat paint job as offering greater value than a one coat job.
Also don t apply stain after it rains.
To a lesser extent other products like semi transparent stains cabot semi solid stains and cabot decking stains can flake and peel from wood siding or deck structures if these products are over applied.
The moisture trapped inside the wood may hamper stain absorption into its fibers eventually causing it to peel off.
The stain has not adhered sufficiently to the wood.
People often wrongly assume that applying one or two more coats will make the stain more durable.
I suspect the deck was either painted or that it received multiple coats of stain.
The unfortunate reality is that peeling solid color stain is a common occurrence.
You might consider having the siding stained with a preservative type stain that soaks into the wood and does not leave any surface coating that will peel and look ugly.
Solid color stain is not supposed to peel like paint does when applied to cedar siding.
Most stains absorb into the wood surface so they don t form a film that could peel off.
They just weather away.