This is not a Polish jokeI wrote a short book, and I want the names of other short books to give me the confidence to submit mine to a publisher.
You need to call some insulation experts in your areaI would have to attic filled with blown in insulationYou may need to make some inner walls so that you can insulate thenI would go with spray foam between the studs if you can and drywall over thatAt least one part of the house so you can have a warm spotSeal up any hole from the outside and any where else air can leak incaulk the windows and doors well inside and outmaybe some flat black curtains on the sunny side windows, the sun will heat the curtains and give some heat in the room.
Yep, you can dry line the walls with plasterboard, should not be too much of a problem if you have a competent plasterer to do it, should not cost the earth either, our house is dry lined and is very snug!
A Christmas Carol by Charles Dickens is a short book (my copy is 88 pages)The Stranger by Albert Camus is relatively short(154 pages) Alexander's Bridge by Willa Cather, 138 pages The Red Badge of Courage by Stephen Crane, 173 pages Siddhartha by Herman Hesse, 122 pages Daisy Miller by Henry James, 95 pages Animal Farm by George Orwell, 128 pages The Pearl by John Steinbeck, 118 pages There are MANY more novels that are relatively shortThe length doesn't determine greatness; the writing does.