We are looking to buy log home that is 1450 sqft and built in 1976. To the internet trained eye it looks well taken care of. It was stained with a solid light brown color 2 years ago. When the time comes to stain again if the exact product is not known what do I have to do? just log wash and add another matched color? I would also like treat the interior with a protective product, any recommendation? I do not have experience with the chinking process but would like to save money, while the house