WEEK COMMENCING 8 MAY 2022
Still with sealers, we were also asked this week why we recommend only ever one coat of Sanding Sealer. There are a couple of reasons for this, the first one being that one coat really should be enough! Our sealers all have a good build and will do the job required (sealing the open pores, binding the fibres together etc) in one go.
Importantly, when using the Cellulose or Acrylic versions, more than one coat of sealer could lead to a crazing effect if a lacquer is applied on top (not relevant to Shellac Sanding Sealer as a lacquer shouldn’t be used over it). This is because the sealer is, in relevant terms, softer than the lacquer and the second coat of sealer can cause a slight movement; the lacquer above doesn’t have enough ‘give’ in it to allow for this, so it will crack.